SSC CGL 2020 PYQ — Question 74

SSC CGL - 3rd March 2020 Shift 3 • Quantitative Aptitude • Q74

The curved surface area of a hemisphere with radius 7 cm is:

(Take π = 22/7)

Show answer & explanation

Correct answer: C

Explanation

The correct answer is Option 3 i.e 308 cm2.

Understanding/Application

Radius = 7cm

C.S.A of the Hemisphere = 2πr2

C.S.A of the hemisphere = (2 × 22 × 7 × 7)/7

= 308 cm2