The figure shows a rectangular piece of paper 42 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 E, F and G in Figure 2.
(a)
Area of the rectangular piece of paper
= 42 x 7
= 294 cm
2 (b)
Areas of H and J
= 7 x 7
= 49 cm
2 Total area of E, F, and G
= 294 - 49
= 245 cm
2 Answer(s): (a) 294 cm
2; (b) 245 cm
2