SSC CHSL 2022 PYQ — Question 73

The correct answer is option 2 i.e. 14 cm

Given:

CSA of hemisphere = 1232 cm²

Formula Used:

CSA of hemisphere = $2 \pi r^2$

Explanation:

According to the given question,

CSA = $2 \pi r^2$

⇒ 1232 = $2 \times {22 \over 7} \times r^2$

⇒ r² = 28 × 7

⇒ r = 14

Hence the required answer is 14 cm.