Question

The surface area of a sphere of radius 4 cm is

• A. 52π sq. cm
• B. 88π sq. cm
• C. 56π sq. cm
• D. 64π sq. cm

Answer 1

The correct option is D

64π sq. cm

Surface area of a sphere of radius 'r' is given by $4\pi r^2$
Hence the surface area of the sphere of radius 4 cm
= $4\pi \times 4^2$
= $64\pi$ sq. cm