A cylinderical vessel has open top and diameter 56 cm. If cost of painting is 0.2 per 100cm^2 is total Rs 352. FIND its height
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Surface area of a cylinder is 2pi r h
Base radius will be 56/2= 28cm
Rate of painting is rs. 0.2 per 100cm sq.
For Rs 352 the rate is 352/0.2 =1760
2 pi rh=1760
Substitute the values
h= 1760×7/22×28×2=10m
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