Question 45

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waecmaths question: 

In the diagram, the shaded part is a carpet laid in a room with dimensions 3.5m by 2.2m leaving a margin of 0.5m round it. Find the area of the margin

Option A: 

4.7m2

Option B: 

4.9m2

Option C: 

5.7m2

Option D: 

5.9m2

waecmaths solution: 

$\begin{align}  & \text{Area of the room }=3.5\times 2.2{{m}^{2}}=7.7{{m}^{2}} \\ & \text{Area of the carpet}=(3.5-1)(2.2-1)=2.5\times 1.2{{m}^{2}}=3{{m}^{2}} \\ & \text{Area of the margin}=(7.7-3){{m}^{2}}=4.7{{m}^{2}} \\\end{align}$

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