The figure shows a rectangular piece of paper 22 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 B, C and D in Figure 2.
(a)
Area of the rectangular piece of paper
= 22 x 4
= 88 cm
2 (b)
Areas of E and F
= 4 x 4
= 16 cm
2 Total area of B, C, and D
= 88 - 16
= 72 cm
2 Answer(s): (a) 88 cm
2; (b) 72 cm
2