Question

Question 5 (i)
It costs Rs. 2200 to paint the inner curved surface of a cylindrical vessel of 10 m deep. If the cost of painting is at the rate of $Rs20per{m}^2$, find

(i) Inner curved surface area of the vessel.

$[Assume\pi =\frac{22}{7}]$

Answer 1

(i) Rs. 20 is the cost of painting $1m^2$ area.

Area painted for Rs. 2200 $=(\frac{1}{20}\times 2200)m^2$

$=110m^2$

Therefore, the inner surface area of the vessel is $110m^2$.