The figure shows a rectangular piece of paper 51 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 K, L and M in Figure 2.
(a)
Area of the rectangular piece of paper
= 51 x 7
= 357 cm
2 (b)
Areas of N and P
= 7 x 7
= 49 cm
2 Total area of K, L, and M
= 357 - 49
= 308 cm
2 Answer(s): (a) 357 cm
2; (b) 308 cm
2