Question

Length of equal sises of an isosceles triangle is 4m less than twice the length of third side.Find length of equal sides if perimeter of the triangle is 57cm

Answer 1

Answer: let the third side be x and then the two equal sides are 2x-4 cm.

Side+side+side=57

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

5x-8=57

5x=57+8

5x=65

x=13

Now you can write the lengths