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Multiple Choice Questions

An equilateral triangle has 10 cm side find the area of the outer circle ........

Quantitative Aptitude (CDS) Geometry

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An equilateral triangle has 10 cm side .find the area of the outer circle?

104.6 $m^{2}$

106.4 $m^{2}$

110 $m^{2}$

118 $m^{2}$

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Explanation:

Side of the equilateral triangle is 10 cm

Cos θ=base/diagonal

Cos30 °=5/d

√3/2 =5/d

D=10/√3

The radius of circle =10/√3 m

Area=22/7 (10/√3)^2

=22/7 (100/3)

=314/3

=104.6 m^2

By: bhavesh kumar singh

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