Question

two equal hemispheres are sticked to form a sphere if total surface area of each is 33.3cm then total surface area of sphere thus formed? ​

Answer 1

surface area of sphere = (total surface area of each hemispers) -2πr^2

3πr^2 = 33.3

=> πr^2 = 11.1 ............. (1)

2(3πr^2) - 2πr^2 = ttl area of sphere............(2)

(1) x 2 = 22.2............(3)

(2)&(3) =>.

66.6 - 22.2 = 44.4

so, surface area of the sphere is 44.4cm^2

hope it helped u..