Question

29. The length of each of two equal sides of an isosceles triangle is 4 cm less than twice the
length of the third side. Find the dimensions of the triangle if its perimeter is 57 cm.

please answer fast ​

Answer 1

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The length of each of two equal sides of an isosceles triangle is 4 cm less than twice the

length of the third side. Find the dimensions of the triangle if its perimeter is 57 cm.

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Let the measurement of the third side be = X

Let the measurements of the two equal side = (2x-4 cm) each

A.T.Q.

Perimeter = sum of all sides

57 = X+(2x-4)+(2x-4)

57 = X+2x-4+2x-4

57 = 5x-8

57+8 = 5x

5x = 65

X = 65/5

X = 13

First side is = 2x-4 = 2(13)-4 = 26-4 = 22cm

second side is = 2x-4 = 2(13)-4 = 26-4 = 22cm

Third side = X = 13cm