help question sixteen urgent
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here is the answer 4m^2
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Step-by-step explanation:
Lateral Surface area of walls=2(l+b)h
=2×(8.6+6.4)×4
=2×15×4
=120m²
Area of 2 doors=2×(lb)
=2×(2×1)
=4m²
Let the side of each square window is x.
Area of 4 windows=4x²
Area left for colouring=120-(4+4x²)
=116-4x²
Cost of painting=40(116-4x²)=4480
=>116-4x²=112
=>4x²=4m²
=>x²=1m²
=>x=1m
Hence,side of window is 1m, area of each window is 1m² and area of 4 windows is 4m²
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