it cost rs 3520 to paint the inner curved surface area of a cylindrical vessel 7m deep. the cost of the painting is at the rate of rupees 10/msquare find (i) inner curved surface area
(ii)radius
(iii)capacity of the vessel
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Step-by-step explanation:
Correct option is
A
96.25 m
3
Total cost of point=2200Rs.
cost of point/m
2
=20Rs.
depth of vessel=10m
Inner curved surface area painted=
cost/m
2
totalcost
=
20
2200
=110m
2
Now, 2πrh=110m
2
2×
7
22
×r×10=110
r=
2×22×10
110×7
=1.75m
∴ radius of the base is 1.75m.
capacity of vessel=πr
2
h=
7
22
×1.75×1.75×10
=96.25m
3
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