Answer:
the cost is £ 6,480
Explanation:
given:
The perimeter of a square courtyard is 144 m
find:
the cost of cementing it at the rate of £5 per m².
Perimeter = 4 Sides
144 = 4 S
S = 144/4
S = 36
Area = S²
A = 36²
A = 1296 m²
cost of cementing the area = 1296 m² x £5 per m² = £ 6,480
therefore,
the cost is £ 6,480