Question on: WAEC Mathematics - 1990

calculate the surface area of a sphere of radius 7cm [Take π = 22/7]

A
86cm2
B
154cm2
C
616cm2
D
1434cm2
Ask EduPadi AI for a detailed answer
Correct Option: C

Surface area of a sphere = \(4\pi r^2\)

= \(4 \times \frac{22}{7} \times 7 \times 7\)

= \(616 cm^2\)

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