find the expenditure on digging a well 14 m deep and of 3 m diameter at rs . 18 per cubic meter ?
22 / 7 * 14 * 3 / 2 * 3 / 2 = 99 m 2 99 * 18 = 1782 answer : c
multiply(volume_cylinder(divide(3, const_2), 14), 18)