SSC CHSL 4 Mar 2018 Shift 3 Paper

Section: English Language

Question : 22 of 100

Marks: +1, -0

The area of a circle is 346.5 cm

^2

. Find its circumference (in cm).

Solution:

Let the radius of circle = r cm
⇒ Area =

πr^2 = 346.5

⇒

22/7 × r^ 2 = 346.5

⇒

r ^2 = 346.5 × 22/7 = 110.25

⇒

r=√110.25 = 10.5

∴ Circumference =

2πr

2 × 22/7 ×10.5

44×1.5=66\cm

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