The lengths of sides of a triangle are in the ratio 3: 4: 5 and its perimeter is 120 cm, find its area. Question The lengths of sides of a triangle are in the ratio 3: 4: 5 and its perimeter is 120 cm, find its area. in progress 0 Math Harper 1 day 2021-11-25T03:57:50+00:00 2021-11-25T03:57:50+00:00 2 Answers 0 views 0

## Answers ( )

3x + 4x + 5x = 12012x = 120x = 10so 3x = 304x = 405x = 50so the sides are 30cm, 40cm, and 50cma = 30, b = 40, c = 50s = ½p = 60by Heron’s formula,area = √[s(s-a)(s-b)(s-c)]= √[60(60-30)(60-40)(60-50)]= √[60*30*20*10]= √360000= 600therefore the area of the triangle is 600cm²Answer:hope its helps u

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