The rectangular piece of wood shown in Figure 1 has a perimeter of 56 cm. Xandra arranged 4 such rectangular pieces of wood to form a figure as shown in Figure 2.
- Find the length of the rectangular piece of wood.
- Find the shaded area in Figure 2.
(a)
Length of the rectangular piece of wood
=
56 - 4 - 42 =
482 = 24 cm
(b)
Length of the shaded area
= 24 - 4
= 20 cm
Shaded area in Figure 2
= 20 x 20
= 400 cm
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Answer(s): (a) 24 cm; (b) 400 cm
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