This aptitude practice question is a geometry question. Concept tested: Computing inradius of a triangle if the sides of the triangle are known.

## Question

What is the measure of in radius of the triangle whose sides are 24, 7 and 25?

1. 12.5
2. 3
3. 6
4. None of these

Correct Answer      Choice (2). The inradius of the triangle measures 3 units.

We know that for any triangle, area of the triangle = r * s, where r is the in radius and s is the semi perimeter

24, 7, 25 is a Pythagorean triplet. ∴ the given triangle is a right angled triangle

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