The figure shows a rectangular piece of paper 36 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 N, P and Q in Figure 2.
(a)
Area of the rectangular piece of paper
= 36 x 5
= 180 cm
2 (b)
Areas of R and S
= 5 x 5
= 25 cm
2 Total area of N, P, and Q
= 180 - 25
= 155 cm
2 Answer(s): (a) 180 cm
2; (b) 155 cm
2