Question

What is the surface area of a sphere with a radius of 12 units?
A. 14471 units2
B. 576 units2
C. 5767 units2
D. 2887 units2

Answer 1

D.

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Answer 2

here's the solution :

In a sphere,

$\boxed { \mathsf{surface \: area = 4\pi r {}^{2} }}$

let's solve

• $s = 4 \times \pi \times 12 \times 12$

• $s = 144 \times 4 \times \pi$

• $s = 576\pi \: \: \: unit {}^{2}$

hence, correct option is C. 576π unit²