waecmaths question:
The area of a square field is 110.25m2. 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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