The figure shows a rectangular piece of paper 30 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 T, U and V in Figure 2.
(a)
Area of the rectangular piece of paper
= 30 x 4
= 120 cm
2 (b)
Areas of W and X
= 4 x 4
= 16 cm
2 Total area of T, U, and V
= 120 - 16
= 104 cm
2 Answer(s): (a) 120 cm
2; (b) 104 cm
2