Question

Square holes of side 3cm are made on the four sides of a shoe box of dimension 30cm*18cm*15cm and then the box is painted . Find the area of the box that is painted.

Answer 1

Let the base dimensions are 15 by 18 and the height is 30, Original area 2(30*15+30*18)+(15*18) = 2250cm^2 Cut-out areas 4*9cm^2 = 36cm^2 Remaining area 2250-36 = 2214cm^2