A building has 8 cylindrical pillars whose cross sectional diameter is 1 m and height is 4.2m .Find expenditure to paint these pillars at rate of rs24 per sq m
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Diameter=1m
Height=4.2m
As we want to paint the pillars we have to find its curved surface area
CSA of cylindrical pillars=8×2πrh
=8×2×3.14×0.5×4.2
=105.6 sq. m
Rate to paint the pillars=Rs 24 per sq. m
Cost=area×rate
=105.6×24
=Rs 2534.4
Height=4.2m
As we want to paint the pillars we have to find its curved surface area
CSA of cylindrical pillars=8×2πrh
=8×2×3.14×0.5×4.2
=105.6 sq. m
Rate to paint the pillars=Rs 24 per sq. m
Cost=area×rate
=105.6×24
=Rs 2534.4
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