The figure shows a rectangular piece of paper 33 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 K, L and M in Figure 2.
(a)
Area of the rectangular piece of paper
= 33 x 5
= 165 cm
2 (b)
Areas of N and P
= 5 x 5
= 25 cm
2 Total area of K, L, and M
= 165 - 25
= 140 cm
2 Answer(s): (a) 165 cm
2; (b) 140 cm
2