Sides of a triangle are in ratio of 25: 14: 12 and its perimeter is 510 m. Find its area using heron's formula.
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Let the sides be 25x, 14x and 12x respectively
25x + 14x + 12x = 510
51x = 510
x = 510/51
x = 10
Sides are:
250, 140 and 120
S = 510/2
= 255
Calculate area using heron's formula as shown in photograph
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