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Multiple Choice Questions

The sides of a triangle are 5 cm 6 cm and 7 cm The area of the triangle is approximately ........

Quantitative Aptitude (CDS) Mensuration 2D

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The sides of a triangle are 5 cm, 6 cm and 7 cm. The area of the triangle is approximately

2 14.9 cm

2 14.7 cm

2 14.5 cm

2 14.3 cm

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Explanation:

a =5, b = 6, c = 7

s = (a+b+c)/2 = ( 5+6+7)/ 2 = 9

$Area\: \: = \: \: \sqrt{s(s-a)(s-b)(s-c)}= \sqrt{9(9-5)(9-6)(9-7)}=\sqrt{9\times4\times 3\times 2}\:$

= 14.7 cm²

By: Munesh Kumari

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