The perimeter of the base of a cuboid is 14 cm. It's lateral surface area is 231 cm^2. Find it's height.
We know that faces of cuboid is in the shape of rectangle . The perimeter of base of cuboid = 14 cm => 2 ( l + b ) = 14 cm Lateral surface area = 231 cm^2 => 2 ( l+ b) h = 231 cm^2 => 14 h = 231cm^2 => h = 231 / 14 => h = 33 / 2 => h = 16.5 cm