Question

if the cost Rs.2200 to paint the inner curved surface area of cylindrical vessel 10m deep. if cost is at rate of 20per msq. find inner surface area of vessel radius of the base outre curved surface area

Answer 1

 (i) inner curved surface area = Rs 2200/20
                                                     = 110m2
(ii) radius of the base
surface AREA=2πr²h
                                     110=2*22/7*r*10                     
                                          r=1.75
(iii) capacity of the vessel= πr2 h
                                             = 22/7* 1.752 *10 

                                             =96.25m3