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The curved surface area of a cylinder...

The curved surface area of a cylinder is `1320\ c m^2` and its base had diameter 21cm. Find the height and the volume of the cylinder.

Text Solution

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C.S.A of cylinder = `1320cm^2`
Diameter, `d=21cm`
Radius, `r=21/2cm`
C.S.A of cylinder = `2pirh`
`1320 = 2xx22/7xx21/2xxh`
`h=1320xx7xx2/44xx21`
`h= 20cm` (h=height)
Volume of cylinder = `pir^2h`
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Knowledge Check

  • If the curved surface area of a cylinder is 1320 cm^2 and its base has diameter 21 cm, then the height of the cylinder is

    A
    10 cm
    B
    20 cm
    C
    22 cm
    D
    25 cm

  • If the curved surface area of a cylinder is 1320 cm^(2) and its base has diameter 21 cm, then the height of the cylinder is

    A
    10 cm
    B
    20 cm
    C
    22 cm
    D
    25 cm

  • Ifthe curved surface area of a cylinder is 1320cm2 and its hase has diameter 21 cm, then the height of the cylinder is

    A
    10 cm
    B
    20 cm
    C
    22 cm
    D
    25 cm

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