Question

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?

Answer 1

Answer:

The answer to your question is:

side 1 = 22.5 cm

side 2 = 30 cm

side 3 = 37.5 cm

Step-by-step explanation:

 ratio = 3:4:5

Perimeter = 90 cm

First we get the sum of the numbers of the proportions

                          3 + 4 + 5 = 12

now divide the perimeter by the number of parts (12)

             

                           90 / 12 = 7.5

Side 1 = 3(7.5) = 22.5 cm

Side 2 = 4(7.5) = 30 cm

Side 3 = 5(7.5) = 37.5 cm

     Perimeter = 22.5 + 30 + 37.5 = 90 cm