The cost of putting the outer c.s.a of a cylinder at rs 1.50 per cm sq is rs.660 if the height of the cylinder is 2m then find c.s.a of the Base of cylinder.
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okay so, the total cost of it was 660 with the rate 1.5/sqcm. so to find the actual CSA of the cylinder, you gotta divide 660/1.5=660×2/3=440sqcm.
CSA of a cylinder=2piRH
440=2piR×200cm
110=piR×100
R=1.1/pi.
CSA of the base of the cylinder is basically the area of the base of the cylinder
=piR^2
=pi× (1.1/pi)^2
=1.21/pi
=1.21/3.14
should be approx 0.315
CSA of a cylinder=2piRH
440=2piR×200cm
110=piR×100
R=1.1/pi.
CSA of the base of the cylinder is basically the area of the base of the cylinder
=piR^2
=pi× (1.1/pi)^2
=1.21/pi
=1.21/3.14
should be approx 0.315
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