Mathematics
Naav
21

The sides of a triangle are in the ratio 3 : 4 : 5. What is the length of each side if the perimeter of the triangle is 90 cm?

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(1) Answers
yogadwis

what we can do is set up an algebraic equation.  our variable can me L for Length 3L+4L+5L=90 now all we have to do is solve 12L=90 ----   ---- 12      12 L=7.5 now multiple each number in the ratio by 7.5 to find out how long each side is 3 times 7.5 is 22.5 4 times 7.5 is 30 5 times 7.5 is 37.5 the side lengths are 22.5, 30, and 37.5

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