The rectangular piece of wood shown in Figure 1 has a perimeter of 36 cm. Vanessa 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
=
36 - 3 - 32 =
302 = 15 cm
(b)
Length of the shaded area
= 15 - 3
= 12 cm
Shaded area in Figure 2
= 12 x 12
= 144 cm
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Answer(s): (a) 15 cm; (b) 144 cm
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