Mathematics for IGCSE & O level - Mensuration (Section 11 - No. 24)

A sphere has a surface area of 1274 cm². Calculate its radius.

10.1 cm

10.0 cm

10.3 cm

9.8 cm

Surface area of a sphere = 4πr², r = √(Surface area/4π) = √(1274 / (4π)) = 10.05 cm