Q. 14.0( 19 Votes )
Sides of a triangle are cm 45 cm, 39 cm, and 42 cm, find its area.
Answer :
To find the area of a triangle whose three sides are given we have the Heron’s formula
Where, ∆ is an area of a triangle.
And a, b, c are the three sides of the triangle
In this question, we have the three sides of the triangle which are 45cm, 39cm, and 42cm
= 63m
S - a = 63 - 45 = 18
S - b = 63 - 39 = 24
S - c = 63 - 42 = 21
Hence
= 756 sq m
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