The radius and height of a cylindrical pillar are 1.4m and 4m respectively.
Find the cost of plastering its curved surface at the rate of Rs. 30per square
meter.
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Step-by-step explanation:
radius = 1.4 m
height= 4 m
we know that.
carved surface area of cylinder= 2πrh
=2 ×22/7 ×1.4 ×4
=2×22×0.2×4
= 35.2 m^2
cost of plastering of 1m^2 area is= 30₹
cost of plastering of 35.2 m^2 area= 30×35.2
= 1,056₹
_______@Deepak Razput
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