A hemisphere has 28 cm diameter. Find its curved surface

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A hemisphere has 28 cm diameter. Find its curved surface area. ?

1. 1232 sq cm
2. 1236 sq cm
3. 1238 sq cm
4. 1233 sq cm

Correct Option: A

Curved surface area = 2πr²
= 2π x 14 x 14 = 2 x (22/7) x 14 x 14
= 2 x 22 x 2 x 14
= 88 x 14
= 1232 sq cm