can anyone answer this plzz
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reejit10:
convert the inner diameter into radius dividing it by 2.Then the inner radius will be (3.5/2)=(7/4).Then place it in the formula of c.s.a that is 2πrh.Our height is given and the radius we had found ,so the answer will come 110metre square.They have told that for 1metre square cost is rs.40 so by unitary method we can find the cost for 110metre square by simply multiplying 110×40=4400.Hence this is the total cost.I hope u will understand my method.Thank u.
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40× 110 =rs 4400.
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Hey !!!
diameter of circular well = 3.5
radii = 3.5/2
deep = 10m
means height = 10m
so , CSA of cylinder = 2πrh
= 2×22×3.5×10/7×2
= 44×0.5×5
= 44×2.5
= 110m²
now , given that
1m² ________________40₹
so ,110m² ______________110×40₹
=> 4400₹ cost of plastering
~~~~~~~~~~~~~~~~~~~~~~~~~
Hope it helps you !!!
@Rajukumar111
diameter of circular well = 3.5
radii = 3.5/2
deep = 10m
means height = 10m
so , CSA of cylinder = 2πrh
= 2×22×3.5×10/7×2
= 44×0.5×5
= 44×2.5
= 110m²
now , given that
1m² ________________40₹
so ,110m² ______________110×40₹
=> 4400₹ cost of plastering
~~~~~~~~~~~~~~~~~~~~~~~~~
Hope it helps you !!!
@Rajukumar111
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