A 5m wide road surrounda square field whose area is 6400m^2. Find the total cost of paving the road with bricks at RS.1500 per 500 bricks when the size of the bricks is 25cm×12cm.
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Answer: Total cost of bricks needed = Rs 1700
Step-by-step explanation:
Area of square = 6400m²
Therefore length of side = 80m
Draw the figure and divide the roads into rectangles and calculate the area of each and add it up
Therefore Area of road = 1700m²
A( 1 brick) = lxb
= 25x12
= 300cm²
300cm= 3m
Therefore number of bricks needed = 1700/3
= 566.67 bricks
Cost of 500 bricks - 1500rs
Cost of 566.67 bricks - X
(cross multiply)
500x = 1500* 566.67
500x = 850005
x = 850005/500
x = 1700
Therefore total cost of bricks = Rs 1700
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