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SSC CGL 2019 PYQ — Question 68

SSC CGL Tier II Quant - 11/09/2019 • Quantitative Aptitude • Q68

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The sides of a triangles are 11 cm, 60 cm and 61 cm. What is the radius of the circle circumscribing the triangle?

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Correct answer: D

Explanation

The correct answer is option 4 i.e. 30.5 cm

Here we can see that,

112 + 602 = 121 + 3600 = 3721 = 612

Hence, it is a Pythagoras triplet and this triangle is a right angled triangle with 61 cm side as hypotenuse.

So,

Radius of circumcircle = hypotenuse/2 = 61/2 = 30.5 cm