An open cylindrical vessel has base diameter 14cm and height 21cm.
Find the cost tin plating its inner surface area at the rate of `3 per cm2.
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Answer:
12.3 rs
step-by-step explanation:
diameter= 14 cm
radius=14/2=7
height=21 cm
curved surface area of cylinder= 2πrh
2×22/7×7×21
44×21
(7 will be eliminate with 7 )
44×21=924
924cm square
area of base circle= πr square
22/7×7
(7 will be eliminate with 7)
22
924+22=946cm square
946×5/100=1230/100
answer=12.3 rupees
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