A swimming pool is 30m long, 20m wide and 5m deep. find the cost of plastering the walls and floor at the rate of rupees 40 square metre
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Answered by
1
Let ,l=30m. ,b=20m. h=5m.
Total area = lb+ 2lh+2bh
A=600+300+200
A=1100 m square
Total cost = 1100×40
= 44000 Rs.
Please mark as brain list answers
Total area = lb+ 2lh+2bh
A=600+300+200
A=1100 m square
Total cost = 1100×40
= 44000 Rs.
Please mark as brain list answers
Answered by
1
length - 30 m
breadth - 20 m
height - 5m
area of floor and wall = 2 ( lb + bh + hl) - lb
= 2 ( 30 × 20 + 20 ×5 +5×30) - 30×20
= 2 ×(600+100+150)-600
=2×850-600
= 1700-600
= 1100m^2
cost= 1100×40
=44000 Rs
breadth - 20 m
height - 5m
area of floor and wall = 2 ( lb + bh + hl) - lb
= 2 ( 30 × 20 + 20 ×5 +5×30) - 30×20
= 2 ×(600+100+150)-600
=2×850-600
= 1700-600
= 1100m^2
cost= 1100×40
=44000 Rs
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