a sewing box is 24cm by 18cm by 9cm. it is to be completely covered with silk material. what is the total surface to be covered?
2 answers
24 * 18 * 9 = ?
the above figure is the volume, not the surface area. The box has 6 faces, in parallel pairs, of dimensions
24x18, 18x9, and 24x9
do those products and double their sum to get the total area.
24x18, 18x9, and 24x9
do those products and double their sum to get the total area.