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A wooden article was made by scooping ou...

A wooden article was made by scooping out a hemisphere from each end of a cylinder as shown in the figure .If the height of the cylinder is 20 cm and its base is of diameter 7 cm , find the total surface area of the area of the article when it is ready .

Text Solution

Verified by Experts

The correct Answer is:
`594 cm^(2)`
Total surface area = curved surface area of the cylinder `+ 2 xx` curved curface area of each hemishpere.
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Knowledge Check

  • The height of a cylinder is 80 cm and the diameter of its base is 7 cm. The whole surface area of the cylinder is

    A
    `1837cm^(2)`
    B
    `1760cm^(2)`
    C
    `1942cm^(2)`
    D
    `3080cm^(2)`

  • If the curved surface area of a cylinder is 1320 cm^2 and its base radius is 21 cm, then its total surface area is :

    A
    `4092 cm^2`
    B
    `2409 cm^2`
    C
    `4920 cm^2`
    D
    none of these

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