what will be the cost of building to paint which area equal to 196 sq ft , if the price per foot of building is rs . 15 ?
let the side of the square plot be a ft . a 2 = 196 = > a = 14 length of the fence = perimeter of the plot = 4 a = 56 ft . cost of building the fence = 56 * 15 = rs . 840 . answer : e
multiply(square_perimeter(sqrt(196)), 15)