Ex 13.4, 1
Assume = 22/7, unless stated otherwise.
Find the surface area of a sphere of radius:
(ii) 5.6 cm
Radius of sphere = r = 5.6 cm
Surface area of sphere = 4 r2
= (4 22/7 5.6 5.6)cm2
= 394.24 cm2
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.