The figure shows a rectangular piece of paper 23 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 L, M and N in Figure 2.
(a)
Area of the rectangular piece of paper
= 23 x 4
= 92 cm
2 (b)
Areas of P and Q
= 4 x 4
= 16 cm
2 Total area of L, M, and N
= 92 - 16
= 76 cm
2 Answer(s): (a) 92 cm
2; (b) 76 cm
2