SSC CHSL 15 Nov 2015 Shift 1 Paper

Question : 114 of 199

Marks: +1, -0

The area of circle whose radius is the diagonal of a square whose area is 4 is:

Solution:

Side of square whose area is 4 units =

√4=2

units
⇒ Radius of circle = Diagonal of square =

√{(2)^2+(2)^2}=2√2

∴ Area of circle =

πr^2

π(2√ 2)^2 = 8π

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