Q. If the total cost for painting the inner curved-surface of a cylindrical vessel 10m deep at the rate of Rs. 10 per m², then inner curved surface area of the vessel will be.
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My name is A
I read in 9th standard
I am 13 years old.
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Answer:
hi Zara
Step-by-step explanation:
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
hope it will help you