Question

Find the surface area of hemisphere with radius 10 cm (π = 3.14).

Answer 1

Given: Hemisphere with radius r = 10 cm, π = 3.14.

Step-wise calculation: For a hemisphere: curved surface area = 2πr² and total surface area = 3πr².

1. Curved surface area = 2 × 3.14 × 10²

= 2 × 3.14 × 100

= 628 cm²

2. Base area = πr²

= 3.14 × 100

= 314 cm²

3. Total surface area = curved area + base area

= 628 + 314

= 942 cm²

The surface area of the hemisphere = 942 cm².