What is the total surface area of a sphere with its radius 2.5 cm?

 a) 2.5π cm²
 b) 6.25π cm²
 c) 3.14 cm²
 d) 25π cm²

KPSC Sergeant-2016

25π cm2. Solution Total Surface area of a sphere = 4πr2 = 4π x 2.52 = 25π cm2