alleryदो गोलों की त्रिज्याओं का अनुपात 1:2 है। उनके पृष्ठीय क्षेत्रफलों का अनुपात क्या है?
A1:6
B1:2
C1:4
D1:8
Answer & Solution
Correct answer: C. 1:4
पृष्ठीय क्षेत्रफल त्रिज्या के वर्ग के अनुपात में बदलता है, इसलिए अनुपात 1:4 है।
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