Question 14

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waecmaths question: 

The area of a square field is 110.25m. Find the cost of fencing it round as N75.00 per metre

Option A: 

N1,575.00

Option B: 

N3,150.00

Option C: 

N4,734.00

Option D: 

N8,268.75

waecmaths solution: 

$\begin{align}  & A={{s}^{2}} \\ & {{s}^{2}}=110.25 \\ & s=\sqrt{110.20{{m}^{2}}} \\ & s=10.5m \\ & Perimeter=4s=4\times 10.5m=42m \\ & \text{The cost of fencing the field is } \\ & 42\times N75=N3,150 \\\end{align}$

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