alleryکون سا الجبری ایکسپریشن رداس r کے دائرے سے منسلک کل بیرونی رقبہ کا حساب لگاتا ہے؟
A2pi * r^2
B4pi * r^2
C(4/3)pi * r^3
D(2/3)pi * r^3
Answer & Solution
Correct answer: B. 4pi * r^2
رداس r والے کرہ کی سطح کا رقبہ 4 * pi * r^2 سے دیا گیا ہے۔
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