SSC CPO SI and ASI 2011 Paper

Question : 126 of 200

Marks: +1, -0

The radius of the incircle of a triangle is 2 cm. If the area of the triangle is 6 cm2, then its perimeter is

Solution:

(3) Area of triangle, A = r × s, where r is in radius and s is semi perimeter.

s= {A}/{r}= {6}/{2}=3 {cm}

So, the perimeter of triangle is 2 × 3 = 6 cm.

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