Question

Find the total surface area of a solid hemisphere of radius r.

Answer 1

HEMISPHERE:
When a plane passing through the centre of a sphere cuts the sphere into two equal parts , then each part is called a hemisphere.

SURFACE AREA:
Surface area of a solid body is the area of all of it surfaces together and it is always measured in square unit.

SOLUTION :
Given:
A solid hemisphere of radius r

TOTAL SURFACE AREA (TSA) OF THE HEMISPHERE= 2πr² + πr² =  3πr² sq units

HOPE THIS WILL HELP YOU..

Answer 2

TOTAL SURFACE AREA OF SOLID HEMISPHERE OF RADIUS r =
$3 \: \pi \: r {}^{2}$