Question

The length of each of two equal side of an isosceles triangle is 4 cm less than twice the length of the third side find the dimension of the triangle if its perimeter is 57 CM.

Answer 1

Answer:

Let S be equal side and T be third side

57=S+S+T equation 1

S=2T-4 equation 2

put the value of S from equation 2 in equation 1

57=2T-4+2T-4+T=5T-8

5T=57+8=65

T=65/5=13

put this value of T in equation 2, you will get S=22