The figure shows a rectangular piece of paper 28 cm by 5 cm which is coloured on one side. It is folded along the dotted line to form Figure 2.
- Find the area of the rectangular piece of paper.
- Find the total area of U, V and W in Figure 2.
(a)
Area of the rectangular piece of paper
= 28 x 5
= 140 cm
2 (b)
Areas of X and Y
= 5 x 5
= 25 cm
2 Total area of U, V, and W
= 140 - 25
= 115 cm
2 Answer(s): (a) 140 cm
2; (b) 115 cm
2