Question

4. The sides of a triangle are in the ratio 2: 4:5.

If the second side is 56 cm, What is the perimeter of the triangle?

Answer 1

Explanation:

Ratio: 2:4:5

Sides are : 2x , 4x , 5x

Second side = 56 cm

4x = 56

x= 56/4

x = 14

2x = 2*14 = 28 cm

4x = 4*14 = 56 cm

5x = 5*14 = 70 cm

Perimeter = 28 + 56 + 70 = 154 cm