a rectangular grass field is 75 m * 55 m , it has a path of 3.5 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 + 55 + 3.5 * 2 ) 2 * 3.5 = > 959 959 * 2 = rs . 1918 answer : e"
multiply(subtract(rectangle_area(add(75, multiply(3.5, 2)), add(55, multiply(3.5, 2))), rectangle_area(75, 55)), 2)