a swimming pool is 30 m in length , 10 m in breadth and 6 m in depth . find the cost of cementing its floors and walls at the rate of rs 14 per sq. m.
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Step-by-step explanation:
Given that,
l=30m
b=10m
d=6m (d-h)
We know that,
Area for coner its floor2d(l+b)+lb
=2(6)(30+10)+(30×10)
=12×40+300
=480+300
=780m²
Rate of coner its floor Rs.14/m²
∴ Total cost of coner its floor =780*14
Rs.10920
Then,
We get Rs.10920
Answered by
0
Answer:
Step-by-step explanation:
Area=2h(l+b)+l*b
This is because they asked to cement the walls (whose area is 2h(l+b)) as well as the floor(whose area is l*b)
=2*6(30+10)+30*10
=12*40+300
=480+300
=780m2
Cost of cementing=780*14
=10920 rupees
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