Question

A toy is in the shape of hemisphere...a small hemisphere is mounted on bigger hemisphere..radius of small is 1 cm and bigger is 2cm find tsa

Answer 1

Answer:

TSA of a hemisphere is 3πr^2

but here we have to take the csa that is 2πr^2

2*3.14*1*1=6.28

2*3.14*2*2=6.28*4=25.12

TSA of the toy=25.12+6.28=31.4cm^2