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Two identical solid hemisphers of equal...

Two identical solid hemisphers of equal base radiu r cm are stuck together along their bases. The total surface area of the combination is `6pir^(2)`.

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Knowledge Check

  • If two solid hemispheres of same base radius r are joined together along their bases, them curved surface area of the this new solid is

    A
    `4pir^(2)`
    B
    `6pir^(2)`
    C
    `3pir^(2)`
    D
    `8pir^(2)`

  • The radius of the base of a solid right circular cone is 8 cm and its height is 15 cm. The total surface area of the cone is:

    A
    128 `pi`
    B
    `200 pi`
    C
    `136 pi`
    D
    `120 pi`

  • The total surface area of a solid hemisphere of radius r is

    A
    `pi r^2`
    B
    `2pi r^2`
    C
    `3pi r^2`
    D
    `4pi r^2`

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