calculate the surface area of a sphere of radius 7cm [Take \pi = 22/7]
A
86cm2
B
154cm2
C
616cm2
D
1434cm2
E
4312cm2
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
Surface area of a sphere = \(4\pi r^2\)
= \(4 \times \frac{22}{7} \times 7 \times 7\)
= \(616 cm^2\)
Source: Myschool Past Questions Archive (Record #22665)