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Question

কোন বৃত্তের ব্যাসার্ধ 7 সেমি। বৃত্তের 11 সে.মি. দীর্ঘ চাপের কেন্দ্রস্থ কোণের পরিমাণ কত রেডিয়ান (প্রায়)?

1.87

1.67

1.57

1.37

ANSWER : 3

Descrption

<img class="image_resized" style="width:22.1%;" src="data:image/png;base64,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">কেন্দ্রস্থ কোণ এর মান অনুযায়ী arc বা বৃত্তচাপের মান নির্ণয় করা হয়। &nbsp;∠AOB=x° হলে AB= পরিধি X&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mi>x</mi><mo>°</mo></mrow><mrow><mn>360</mn><mo>°</mo></mrow></mfrac></math>তাহলে r=7cm AB=11cm হলে AB= 2<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">π</mi></math>r X &nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><mfrac><mrow><mi>x</mi><mo>°</mo></mrow><mrow><mn>360</mn><mo>°</mo></mrow></mfrac></math>or, x°= (11 X 180)/(7<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">π</mi></math>)=90.036°1°= (<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">π</mi></math>/180)radian90.036°=((90.036°)X (<math xmlns="http://www.w3.org/1998/Math/MathML"><mi mathvariant="normal">π</mi></math>/180)) radian=1.57 radian&nbsp;

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