Question

it costs ₹ 2200 to paint the inner curved surface of a vessel 10cm deep. It rhe cost of painting is at the rate of ₹20 per m2 ,find the first radius of the base second inner curved surface area of the vessel and third capacity of the vessel. is any related questions

Answer 1

h= 10m
1)   inner curverd surface area = total cost / cost of painting per m^2
  2200 /20 m^2    =     110 m^2 
2)  2 pie  rh = 110 
    2 *  22/7  * r   *   10   = 110
    r =    110 *   7   / 2 * 22  * 10      =>  1.75 m is radius 
3)  capacity of vessel =   pie r^2 h 
     22/7   *  1.75 * 1.75 *  10     =>    96.25 m ^3

so   inner curveed surface area =  110m^2 
    radius   = 1.75 m   and capacity = 96.25 m ^3   {   1m^3 = 1kl }
                                                           96.25 kl