A cylinder has a diameter of 20 cm. The area of the curved surface is 100 cm² (sg. cm).
Find :
(i) the height of the cylinder correct to one decimal place.
(ii) the volume of the cylinder correct to one decimal place.
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Answer:
Diameter of cylinder = 20 cm
Radius (r) =
2
20
=10cm
CSA=1000cm
3
2πrh=1000
2(3.14)(10)h=1000
h=
2(3.14)(10)
1000
=15.9cm
and volume = πr
2
2h
=(3.14)(10)
2
(15.9)
=4992.6cm
3
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