The figure shows a rectangular piece of paper 20 cm by 4 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 V, W and X in Figure 2.
(a)
Area of the rectangular piece of paper
= 20 x 4
= 80 cm
2 (b)
Areas of Y and Z
= 4 x 4
= 16 cm
2 Total area of V, W, and X
= 80 - 16
= 64 cm
2 Answer(s): (a) 80 cm
2; (b) 64 cm
2