Question

It costs Rs 2200 to paint the inner curved surface of a cylindrical vessel 10 m deep. If the cost of painting is at the rate of Rs 20 per $m^2$ find

• A. Inner curved surface area of the vessel
• B. Radius of the base
• C. Capacity of the vessel
• D. None of these

Answer 1

The correct option is A Inner curved surface area of the vessel

Given total cost of painting inner CSA$=2200$

Cost of painting$=20$ Rs. $/m^2$

then

inner CSA of cylinder$=\frac{2200}{20}=110m^2$

$\therefore$ inner CSA is $110m^2$.