Find the cost of plastering the inner surface of the well ,with the diameter 3.5 m and depth 10 m at the rate of rupees 45 per m2
Answers
Answered by
24
inner surface of the well =πrh
d=3.5m,h=10m.
then, inner surface of the well =2*π*3.5/2*10
=110m²
1m²=Rs45
110m²=110*45
=Rs4950.
Hope this will help you.
d=3.5m,h=10m.
then, inner surface of the well =2*π*3.5/2*10
=110m²
1m²=Rs45
110m²=110*45
=Rs4950.
Hope this will help you.
ork:
Please make mine as the best
thank you
inner surface of well also includes the base of well
the base of the well needs water, and how can you plaster it also?????????
oh yeah :)
good avishek
:)
:)
Answered by
10
We know that a well is in a shape of a cylinder. So to find the cost of plastering, we need to find the curved surface area of the walls first and then multiply it to the cost.
So CSA of cylinder = 2πrh
= 22/7 x 3.5/2 x 10
= (22 x 0.5 X 10)/2
= 110 m²
Now cost = 110 x 45
= Rs 4950
Hope that helps !!
So CSA of cylinder = 2πrh
= 22/7 x 3.5/2 x 10
= (22 x 0.5 X 10)/2
= 110 m²
Now cost = 110 x 45
= Rs 4950
Hope that helps !!
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