7. What is the cost of tiling a rectangular plot 400 m long and 300 m wide at the rate of Rs 6 per
hundred sq m.?
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Length of the rectangular plot (l) = 400 m
Breadth of the rectangular plot (b) = 300 m
Area of the rectangular plot = l×b
Area = 400×300
Area = 1,20,000 m²
Rate of tiling over 100 m² = ₹6
Rate of tiling over 1 m² = ₹ 6/100
Cost of tiling the rectangular plot
= 1,20,000×6/100
= 1200×6
= ₹ 7200
Cost of tiling over the rectangular plot
= ₹ 7200
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