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Easy

Question

The sides of a triangle are 16 cm, 30 cm and 34 cm. What is its area ?

hintHint:

Use Heron’s formula

The correct answer is: 240 cm2


    It is given that a = 16 cm , b = 30 cm and c = 34 cm
    Using Heron’s formula
    Area of triangle = square root of s left parenthesis s minus a right parenthesis left parenthesis s minus b right parenthesis left parenthesis s minus c right parenthesis end root where s = fraction numerator a plus b plus c over denominator 2 end fraction
    s = fraction numerator 30 plus 16 plus 34 over denominator 2 end fraction = 40
    Area of triangle
    square root of 40 left parenthesis 40 minus 30 right parenthesis left parenthesis 40 minus 34 right parenthesis left parenthesis 40 minus 16 right parenthesis end root
    square root of 40 left parenthesis 10 right parenthesis left parenthesis 6 right parenthesis left parenthesis 24 right parenthesis end root = 240 cm2

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