The lateral side of an isosceles triangle is 3 times the base. the perimeter of the triangle is 63cm.

The lateral side of an isosceles triangle is 3 times the base. the perimeter of the triangle is 63cm. Find the sides of the triangle.

Let x cm – lateral sides of an isosceles triangle;

Then 3x is the base of an isosceles triangle;

We get the equation for the perimeter:

x + x + 3x = 63 cm;

5x = 63 cm;

x = 63/5;

x = 12.6 cm – the sides of the triangle;

3x = 12.6 * 3 = 37.8 cm – the base of the triangle.