Question

sides of a triangle are in the ratio of 12:17:25 and its perimeter is 540 cm .find its area

Answer 1

Let the sides be 12x, 17x, 25x.
Then, perimeter = 12x+17x+25x=540 (given)
= 54x = 540
=x = 540/54
= x= 10.
Hence 12x = 12*10= 120
17x= 17*10 = 170
25x= 25*10 = 250.

Hence S= 120+170+250/2 = 270

270-120 = 150
270-170= 100
270-250 = 20

Area of triangle = 8100000
= 900

Answer 2

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