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The length of radius of right circular d...

The length of radius of right circular drum is r cm and height is h cm. If half part of the drum is filled with water, then the volume of water will be ` pi r^(2)h` cubic-cm. TRUE of FALSE

Text Solution

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False, since the volume of water will be `1/2 pi r^(2) h ` cu-cm `= ( pi r^(2) h)/(2) ` cc.
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Knowledge Check

  • The height of a right circular cone is 21 cm and the radius of its base is 12 cm. Its volume is :

    A
    4710 `cm^3`
    B
    9504 `cm^3`
    C
    3168 `cm^3`
    D
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  • The radius of a right circular cone and its height is r unit . The volume of the sphere of diameter equal to the stant height of the cone will be

    A
    ` (2r^(3))/3 pi ` cu - unit
    B
    ` (sqrt(2r^(3)))/3 pi ` cu - point
    C
    ` (4r^(3))/3 pi ` cu - unit
    D
    ` (r^(3))/3 ` cu - unit

  • If the area of the base of a right circular cone be 4pi r^2 sq-cm and height be 3 cm , then the volume of the cone will be

    A
    `12 pi r^2c c`
    B
    `(4)/(3)pir^2h c c`
    C
    `(4)/(9)pi r^2h c c`
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