a rectangular grass field is 75 m * 40 m , it has a path of 2.5 m wide all round it on the outside . find the area of the path and the cost of constructing it at rs . 2 per sq m ?
area = ( l + b + 2 d ) 2 d = ( 75 + 40 + 2.5 * 2 ) 2 * 2.5 = > 600 600 * 2 = rs . 1200 answer : c
multiply(subtract(rectangle_area(add(75, multiply(2.5, const_2)), add(40, multiply(2.5, const_2))), rectangle_area(75, 40)), 2)