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একটি আয়তাকার ঘরের দৈর্ঘ্য বিস্তারের দ্বিগুণ। এর ক্ষেত্রফল ৫১২ বর্গমিটার হলে, পরিসীমা কত?
98 মিটার
96 মিটার
94 মিটার
92 মিটার
ANSWER : 2
Descrption
প্রস্থ x হলে দৈর্ঘ্য 2x ∴ক্ষেত্রফল = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mn>2</mn><msup><mi>x</mi><mn>2</mn></msup><mo> = </mo><mn>512</mn><mspace linebreak = "newline"/><mo>⇒</mo><msup><mi>x</mi><mn>2</mn></msup><mo> = </mo><mn>256</mn><mspace linebreak = "newline"/><mo>⇒</mo><mi>x</mi><mo> = </mo><mn>16</mn><mspace linebreak = "newline"/><mo>.</mo><mo>'</mo><mo>.</mo><mo> </mo><mi>প</mi><mi>র</mi><mi>ি</mi><mi>স</mi><mi>ী</mi><mi>ম</mi><mi>া</mi><mo> = </mo><mn>2</mn><mo>(</mo><mn>16</mn><mo> + </mo><mn>32</mn><mo>)</mo><mo> = </mo><mn>96</mn></math>
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