The figure shows a rectangular piece of paper 45 cm by 7 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 M, N and P in Figure 2.
(a)
Area of the rectangular piece of paper
= 45 x 7
= 315 cm
2 (b)
Areas of Q and R
= 7 x 7
= 49 cm
2 Total area of M, N, and P
= 315 - 49
= 266 cm
2 Answer(s): (a) 315 cm
2; (b) 266 cm
2