The total surface area of a hemisphere of radius 7 cm is
Given: Radius of the hemisphere: 7cm .
TSA of the hemisphere is given by: 3πr2
Let S be the TSA of the hemisphere.
∴ S = 3πr2
⇒ S = 3 × π × (7)2 = 147π cm2
∴ TSA of the hemisphere is 147π cm2