a rectangular field has area equal to 150 sq m and perimeter 50 m . its length and breadth must be ?
lb = 150 2 ( l + b ) = 50 = > l + b = 25 l – b = 5 l = 15 b = 10 answer : d
subtract(divide(add(subtract(power(divide(50, const_2), const_2), multiply(150, const_4)), sqrt(subtract(power(divide(50, const_2), const_2), multiply(150, const_4)))), const_2), sqrt(subtract(power(divide(50, const_2), const_2), multiply(150, const_4))))