Question

it costs₹ 2200 to paint the inner curved surface of a cylindrical vessel 10 m deep. If
the cost of painting is at the rate of ₹;20 per m^2 find
(1) inner curved surface area of the vessel,
(i) radius of the base,
(iii) capacity of the vessel​

Answer 1

Answer:

Total cost of point=2200Rs.

cost of point/m2=20Rs.

depth of vessel=10m

 Inner curved surface area painted=cost/m2totalcost=202200=110m2

 Now, 2πrh=110m22×722×r×10=110r=2×22×10110×7=1.75m

∴ radius of the base is 1.75m.

 capacity of vessel=πr2h=722×1.75×1.75×10=96.25m3