Question

The sides of triangle are in the ratio of 4:5:7 if its perimeter is 80 cm what will be its sides

Answer 1

Answer:

The sides are 20 , 25 , 35

Step-by-step explanation:

Let's take the numbers in the Ratio form as x that is 4:5:7 will become as 4x + 5x + 7x

Perimeter of a Triangle = sum of three sides

                                       = 4x + 5x + 7x = 80 cm

                                       = 16x                = 80 cm

                                       = x                   = 80/16

                                       = x                    = 5

 So 4x = 4 × 5 = 20

      5x = 5 × 5 = 25

      7x = 7 × 5 = 35

CHECKING

Perimeter of a Triangle = Sum of three sides

                                        = 20 + 25 + 35 = 80 cm

                                        = 80 cm            = 80 cm                    

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