The ratio of the volume of two spheres is 8 : 27. What is the ratio of their surface areas? दो गोलों के आयतन का अनुपात 8 : 27 है। उनके पृष्ठीय क्षेत्रफल का अनुपात क्या है?
A
4:9 (4:9)
B
2:3 (2:3)
C
16:81 (16:81)
D
9:4 (9:4)
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Correct Answer 4:9
Explanation
Volume ratio V1/V2 = (r1/r2)³ = 8/27. Radius ratio r1/r2 = 2/3. Surface area ratio A1/A2 = (r1/r2)² = (2/3)² = 4/9.