Question

if an isosceles triangle , the base is 2/5th of the length of each of the other two equal sides. if the perimeter of triangle is 36, find the length of all 3 sides

Answer 1

$p = 2x + \frac{2x}{5}$
$36 = \frac{10x}{5} + \frac{2x}{5}$
$36 = 12x \div 5 \\ 12x = 36 \times 5 \\ 12x = 180 \\ x = 180 \div 12 \\ x = 15$


$x = \frac{10x}{5} + \frac{2x}{5}$
36= 2x+2x/5
sides are 15,15and 6



ok ....