SSC CHSL Model Paper 4

Question : 57 of 100

Marks: +1, -0

What is the total surface area of a right circular cone of height 14 cm and base radius 7 cm?

Solution:

Given, h = 14 cm, r = 7 cm
So, latent height,

l^2 = 7^2 + 14^2 = 245

⇒

l =√ 245 = 15.65 cm

Total surface area

= πrl + πr^2

= 498.35 \cm^2

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