1.

The sides of a triangle are in the ratio 3 : 5 : 7. Its smallest side is 28 cm less than the largest side. Find the sides of the triangle.

Answer»

Ratio of the sides of the triangle = 3 : 5 : 7

3x = 7x – 28

7x – 28 = 3x

4x = 28

x = 28 ÷ 4

Smallest side = 3 × 7 = 21 cm

Second side = 5 × 7 = 35 cm

Largest side = 7 × 7 = 49 cm



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