the perimeter of an equilateral triangle is 45 . if one of the side is the side of an isoceles triangle of perimeter 40 then what is the lenght of base of isoceles triangle .
"base of isoceles triangle is 40 - 15 - 15 = 10 units . answer : a"
subtract(subtract(40, divide(45, const_3)), divide(45, const_3))