if the ratio of side of a triangle are 3:4:5 what is the perimeter of the triangle is 90 cm?

Use and algebraic equation to solve the problem.

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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2 Answers

3x+4x+5x=90

12x=90

x=90/12=7.5

3x=3*7.5=22.5cm

4x=4*7.5=30cm

5x=5*7.5=37.5cm
by Level 8 User (32.3k points)
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