Q2 of 69 Page 240

The length of three sides of a triangle are 20 cm, 16 cm and 12 cm. The area of the triangle is –

Let the threes ides of the triangle be,

a = 20 cm, b = 16 cm and c = 12 cm


Now, s =


=


=


= 24 cm


Now, by using Heron’s formula we have:


Area of triangle =


=


=


=


= 6 × 4 × 4


= 96 cm2


Hence, option (a) is correct

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