the height of the cylinder pipe is 10 M and its diameter is 63 M find the expenditure of painting is curved surface if the rate of the painting is 1 Rupee per square metre
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hello!!
here's ur answer...
given the length (height) of the cylinder is 10m.
in cm=10×100=1000cm
diameter of the cylinder=63cm
therefore radius=63/2cn
CSA of the cylinder=2πrh
=2×22/7×63/2×1000
=2×11×9×1000
=22×9000
=198000cm²
in metres=198000/100
=1980m²
if per m² costs₹1 then 1980m² costs=1980×1
=₹1980
hence, the total cost of painting is ₹1980.
hope this helps...
here's ur answer...
given the length (height) of the cylinder is 10m.
in cm=10×100=1000cm
diameter of the cylinder=63cm
therefore radius=63/2cn
CSA of the cylinder=2πrh
=2×22/7×63/2×1000
=2×11×9×1000
=22×9000
=198000cm²
in metres=198000/100
=1980m²
if per m² costs₹1 then 1980m² costs=1980×1
=₹1980
hence, the total cost of painting is ₹1980.
hope this helps...
Anonymous:
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