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ত্রিভুজের তিন বাহু দেওয়া থাকলে ক্ষেত্রফল

জ্যামিতি (Geometry) - গণিত -

112

ত্রিভুজের তিন বাহু দেওয়া আছে :

মনে করি, △ABC এর BC = a, CA = b এবং AB = c । এর পরিসীমা 2s = a + b + c l AD ⊥ BC আঁকি।

ধরি, BD = x তাহলে, CD = a - x

△ABD এবং △ACD সমকোণী।

আবার,

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# বহুনির্বাচনী প্রশ্ন

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পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা তথ্য ও সম্প্রচার মন্ত্রণালয় - সহকারী তথ্য কর্মকর্তা BCS 24th BCS Preli-2003 DIP Assistant Director-2014 NTRCA 14th NTRCA -2017 BJS 4th BJS Preli-2009 MoLJPA Assistant Secretary (Drafting)-2001 MoFA Administrative Officer-2004 UCB UCB Officer-2010 MoWCA Upazila Women Affairs Officer-2016 Law Ministry Sub-Registrar-2016 RAKUB RAKUB Officer (Cash)-2010 BAFL Alfalah MTO-2005 BRDB Officer-2012 REB Assistant Secretary/Assistant Director (Admin)-2013 DG Food SI Food-2012 BRDB URDO-2012 Secondary Teacher Govt Secondary Teacher-2011 31st BCS Preli-2011 DNS Assistant Director-2009 CBHC CHCP-2018 BMET Instructor (TTC)-2018 Rupali Bank Rupali Officer-2018 Sonali Bank Sonali Senior Officer-2018 Sonali Senior Officer-2018 Primary Teacher Primary Assistant Teacher-2019 NTRCA 16th NTRCA College-2019 BREB – Assistant Enforcement Coordinator-2019 BFSA – Various Posts-2019 JBC – Upper Division Assistant-2021 NSI – Wireless Operator and Accountant cum-Cashier-2021 DTE – Head Assistant / Accountant / Computer Operator-2021 TMED – Office Assistant cum-Computer Typist-2021 TMED – Various Posts-2021 OCAG – Auditor-2021 EED – Office Sohayak-2021 Combined Bank Combined Bank Officer-2021 BREB – Assistant Enforcement Coordinator-2021 CGA – Auditor-2022 Biman – Ground Service Assistant-2022 MOR Guard Grade-2-2022 FSCD Station Officer-2022 15th NTRCA -2019 CBHC CHCP-2022 DLS Laboratory Technician-2023 DGHS – Medical Technician-2023 PKB PKB Officer-2023 KB Karmasangsthan Officer-2023 MRA – Assistant Director-2023 FSCD – Firefighter-2023 Prisons – Jail Warder & Female Jail Warder-2024 BUET Petrobangla – Sub-Assistant Engineer-2024 Biman – Traffic Helper-2024 OBL ONE Officer-2025 GrameenBank Grameen Officer-2025 ECS – Driver / Cleaner-2025 EED – SAE (Civil)-2025 IBBL IBBL Officer-2017 CAAB – Security Supervisor-2025 FSCD – Station Officer (Non Cadre)-2025 Combined Bank Officer-2025 BJSC Office Assistant-2026 PMG Chattogram Postman-2026 Bangladesh Post Khulna Multiple Posts-2026 8th NTRCA Assistant Head-2026 BSCIC Technical Officer-2026 GTCL Technician-2023 গণিত ত্রিভুজের তিন বাহু দেওয়া থাকলে ক্ষেত্রফল
87.5 cm2
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পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা স্বরাষ্ট্র মন্ত্রণালয় - ফায়ার সার্ভিস ও সিভিল ডিফেন্স অধিদপ্তর - স্টেশন অফিসার (নন ক্যাডার) BCS 24th BCS Preli-2003 DIP Assistant Director-2014 NTRCA 14th NTRCA -2017 BJS 4th BJS Preli-2009 MoLJPA Assistant Secretary (Drafting)-2001 MoFA Administrative Officer-2004 UCB UCB Officer-2010 MoWCA Upazila Women Affairs Officer-2016 Law Ministry Sub-Registrar-2016 RAKUB RAKUB Officer (Cash)-2010 BAFL Alfalah MTO-2005 BRDB Officer-2012 REB Assistant Secretary/Assistant Director (Admin)-2013 DG Food SI Food-2012 BRDB URDO-2012 Secondary Teacher Govt Secondary Teacher-2011 31st BCS Preli-2011 DNS Assistant Director-2009 CBHC CHCP-2018 BMET Instructor (TTC)-2018 Rupali Bank Rupali Officer-2018 Sonali Bank Sonali Senior Officer-2018 Sonali Senior Officer-2018 Primary Teacher Primary Assistant Teacher-2019 NTRCA 16th NTRCA College-2019 BREB – Assistant Enforcement Coordinator-2019 BFSA – Various Posts-2019 JBC – Upper Division Assistant-2021 NSI – Wireless Operator and Accountant cum-Cashier-2021 DTE – Head Assistant / Accountant / Computer Operator-2021 TMED – Office Assistant cum-Computer Typist-2021 TMED – Various Posts-2021 OCAG – Auditor-2021 EED – Office Sohayak-2021 Combined Bank Combined Bank Officer-2021 BREB – Assistant Enforcement Coordinator-2021 CGA – Auditor-2022 Biman – Ground Service Assistant-2022 MOR Guard Grade-2-2022 FSCD Station Officer-2022 15th NTRCA -2019 CBHC CHCP-2022 DLS Laboratory Technician-2023 DGHS – Medical Technician-2023 PKB PKB Officer-2023 KB Karmasangsthan Officer-2023 MRA – Assistant Director-2023 FSCD – Firefighter-2023 Prisons – Jail Warder & Female Jail Warder-2024 BUET Petrobangla – Sub-Assistant Engineer-2024 Biman – Traffic Helper-2024 OBL ONE Officer-2025 GrameenBank Grameen Officer-2025 ECS – Driver / Cleaner-2025 EED – SAE (Civil)-2025 IBBL IBBL Officer-2017 CAAB – Security Supervisor-2025 Combined Bank Officer-2025 BJSC Office Assistant-2026 PMG Chattogram Postman-2026 Bangladesh Post Khulna Multiple Posts-2026 MoIB Assistant Information Officer-2026 8th NTRCA Assistant Head-2026 BSCIC Technical Officer-2026 GTCL Technician-2023 গণিত ত্রিভুজের তিন বাহু দেওয়া থাকলে ক্ষেত্রফল
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ইসলামী ব্যাংক বাংলাদেশ পিএলসি ইসলামী ব্যাংক বাংলাদেশ পিএলসি – অ্যাসিস্ট্যান্ট ট্রেইনি অফিসার (জেনারেল/ক্যাশ) BCS 24th BCS Preli-2003 PSC DIP Assistant Director-2014 NTRCA 14th NTRCA -2017 BJS 4th BJS Preli-2009 MoLJPA Assistant Secretary (Drafting)-2001 MoFA Administrative Officer-2004 UCB UCB Officer-2010 MoWCA Upazila Women Affairs Officer-2016 Law Ministry Sub-Registrar-2016 RAKUB RAKUB Officer (Cash)-2010 BAFL Alfalah MTO-2005 BRDB Officer-2012 REB Assistant Secretary/Assistant Director (Admin)-2013 DG Food SI Food-2012 BRDB URDO-2012 Secondary Teacher Govt Secondary Teacher-2011 31st BCS Preli-2011 DNS Assistant Director-2009 CBHC CHCP-2018 BMET Instructor (TTC)-2018 Rupali Bank Rupali Officer-2018 Sonali Bank Sonali Senior Officer-2018 Sonali Senior Officer-2018 Primary Teacher Primary Assistant Teacher-2019 NTRCA 16th NTRCA College-2019 BREB – Assistant Enforcement Coordinator-2019 BFSA – Various Posts-2019 JBC – Upper Division Assistant-2021 NSI – Wireless Operator and Accountant cum-Cashier-2021 DTE – Head Assistant / Accountant / Computer Operator-2021 TMED – Office Assistant cum-Computer Typist-2021 TMED – Various Posts-2021 OCAG – Auditor-2021 EED – Office Sohayak-2021 Combined Bank Combined Bank Officer-2021 BREB – Assistant Enforcement Coordinator-2021 CGA – Auditor-2022 Biman – Ground Service Assistant-2022 MOR Guard Grade-2-2022 FSCD Station Officer-2022 15th NTRCA -2019 CBHC CHCP-2022 DLS Laboratory Technician-2023 DGHS – Medical Technician-2023 PKB PKB Officer-2023 KB Karmasangsthan Officer-2023 MRA – Assistant Director-2023 FSCD – Firefighter-2023 Prisons – Jail Warder & Female Jail Warder-2024 BUET Petrobangla – Sub-Assistant Engineer-2024 Biman – Traffic Helper-2024 OBL ONE Officer-2025 GrameenBank Grameen Officer-2025 ECS – Driver / Cleaner-2025 EED – SAE (Civil)-2025 CAAB – Security Supervisor-2025 FSCD – Station Officer (Non Cadre)-2025 Combined Bank Officer-2025 BJSC Office Assistant-2026 PMG Chattogram Postman-2026 Bangladesh Post Khulna Multiple Posts-2026 MoIB Assistant Information Officer-2026 8th NTRCA Assistant Head-2026 BSCIC Technical Officer-2026 GTCL Technician-2023 গণিত ত্রিভুজের তিন বাহু দেওয়া থাকলে ক্ষেত্রফল
12km2
20km2
15km2
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পিএসসি ও অন্যান্য নিয়োগ পরীক্ষা শিক্ষা প্রকৌশল অধিদপ্তর - উপ-সহকারী প্রকৌশলী (সিভিল) BCS 24th BCS Preli-2003 DIP Assistant Director-2014 NTRCA 14th NTRCA -2017 BJS 4th BJS Preli-2009 MoLJPA Assistant Secretary (Drafting)-2001 MoFA Administrative Officer-2004 UCB UCB Officer-2010 MoWCA Upazila Women Affairs Officer-2016 Law Ministry Sub-Registrar-2016 RAKUB RAKUB Officer (Cash)-2010 BAFL Alfalah MTO-2005 BRDB Officer-2012 REB Assistant Secretary/Assistant Director (Admin)-2013 DG Food SI Food-2012 BRDB URDO-2012 Secondary Teacher Govt Secondary Teacher-2011 31st BCS Preli-2011 DNS Assistant Director-2009 CBHC CHCP-2018 BMET Instructor (TTC)-2018 Rupali Bank Rupali Officer-2018 Sonali Bank Sonali Senior Officer-2018 Sonali Senior Officer-2018 Primary Teacher Primary Assistant Teacher-2019 NTRCA 16th NTRCA College-2019 BREB – Assistant Enforcement Coordinator-2019 BFSA – Various Posts-2019 JBC – Upper Division Assistant-2021 NSI – Wireless Operator and Accountant cum-Cashier-2021 DTE – Head Assistant / Accountant / Computer Operator-2021 TMED – Office Assistant cum-Computer Typist-2021 TMED – Various Posts-2021 OCAG – Auditor-2021 EED – Office Sohayak-2021 Combined Bank Combined Bank Officer-2021 BREB – Assistant Enforcement Coordinator-2021 CGA – Auditor-2022 Biman – Ground Service Assistant-2022 MOR Guard Grade-2-2022 FSCD Station Officer-2022 15th NTRCA -2019 CBHC CHCP-2022 DLS Laboratory Technician-2023 DGHS – Medical Technician-2023 PKB PKB Officer-2023 KB Karmasangsthan Officer-2023 MRA – Assistant Director-2023 FSCD – Firefighter-2023 Prisons – Jail Warder & Female Jail Warder-2024 BUET Petrobangla – Sub-Assistant Engineer-2024 Biman – Traffic Helper-2024 OBL ONE Officer-2025 GrameenBank Grameen Officer-2025 ECS – Driver / Cleaner-2025 IBBL IBBL Officer-2017 CAAB – Security Supervisor-2025 FSCD – Station Officer (Non Cadre)-2025 Combined Bank Officer-2025 BJSC Office Assistant-2026 PMG Chattogram Postman-2026 Bangladesh Post Khulna Multiple Posts-2026 MoIB Assistant Information Officer-2026 8th NTRCA Assistant Head-2026 BSCIC Technical Officer-2026 GTCL Technician-2023 গণিত ত্রিভুজের তিন বাহু দেওয়া থাকলে ক্ষেত্রফল

30cm2

400cm2

50cm2

20cm2

ওয়ান ব্যাংক পিএলসি ওয়ান ব্যাংক লিমিটেড – স্পেশাল ক্যাডার অফিসার BCS 24th BCS Preli-2003 PSC DIP Assistant Director-2014 NTRCA 14th NTRCA -2017 BJS 4th BJS Preli-2009 MoLJPA Assistant Secretary (Drafting)-2001 MoFA Administrative Officer-2004 UCB UCB Officer-2010 MoWCA Upazila Women Affairs Officer-2016 Law Ministry Sub-Registrar-2016 RAKUB RAKUB Officer (Cash)-2010 BAFL Alfalah MTO-2005 BRDB Officer-2012 REB Assistant Secretary/Assistant Director (Admin)-2013 DG Food SI Food-2012 BRDB URDO-2012 Secondary Teacher Govt Secondary Teacher-2011 31st BCS Preli-2011 DNS Assistant Director-2009 CBHC CHCP-2018 BMET Instructor (TTC)-2018 Rupali Bank Rupali Officer-2018 Sonali Bank Sonali Senior Officer-2018 Sonali Senior Officer-2018 Primary Teacher Primary Assistant Teacher-2019 NTRCA 16th NTRCA College-2019 BREB – Assistant Enforcement Coordinator-2019 BFSA – Various Posts-2019 JBC – Upper Division Assistant-2021 NSI – Wireless Operator and Accountant cum-Cashier-2021 DTE – Head Assistant / Accountant / Computer Operator-2021 TMED – Office Assistant cum-Computer Typist-2021 TMED – Various Posts-2021 OCAG – Auditor-2021 EED – Office Sohayak-2021 Combined Bank Combined Bank Officer-2021 BREB – Assistant Enforcement Coordinator-2021 CGA – Auditor-2022 Biman – Ground Service Assistant-2022 MOR Guard Grade-2-2022 FSCD Station Officer-2022 15th NTRCA -2019 CBHC CHCP-2022 DLS Laboratory Technician-2023 DGHS – Medical Technician-2023 PKB PKB Officer-2023 KB Karmasangsthan Officer-2023 MRA – Assistant Director-2023 FSCD – Firefighter-2023 Prisons – Jail Warder & Female Jail Warder-2024 BUET Petrobangla – Sub-Assistant Engineer-2024 Biman – Traffic Helper-2024 GrameenBank Grameen Officer-2025 ECS – Driver / Cleaner-2025 EED – SAE (Civil)-2025 IBBL IBBL Officer-2017 CAAB – Security Supervisor-2025 FSCD – Station Officer (Non Cadre)-2025 Combined Bank Officer-2025 BJSC Office Assistant-2026 PMG Chattogram Postman-2026 Bangladesh Post Khulna Multiple Posts-2026 MoIB Assistant Information Officer-2026 8th NTRCA Assistant Head-2026 BSCIC Technical Officer-2026 GTCL Technician-2023 গণিত ত্রিভুজের তিন বাহু দেওয়া থাকলে ক্ষেত্রফল
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