the length of rectangle is thrice its breadth and its perimeter is 40 m , find the area of the rectangle ?
"2 ( 3 x + x ) = 40 l = 15 b = 5 lb = 15 * 5 = 75 answer : c"
multiply(multiply(divide(40, add(multiply(const_3, const_2), multiply(const_1, const_2))), const_3), divide(40, add(multiply(const_3, const_2), multiply(const_1, const_2))))