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