Mathematics

9th -

10thgrade

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Surface Areas and Volumes

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15 questions

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  • 1. Multiple Choice
    30 seconds
    1 pt

    For a sphere of radius r, curved surface area of the hemisphere

    2πr22\pi r^2

    3πr23\pi r^2

    4πr24\pi r^2

    πr2\pi r^2

  • 2. Multiple Choice
    30 seconds
    1 pt

    Consider a hollow cylinder having external radius R, internal radius r and height h. Volume of the material

    πr2h\pi r^2h

    π(R2r2)h\pi\left(R^2-r^2\right)h

    π(Rr)2h\pi\left(R-r\right)^2h

    π(h2r2)R\pi\left(h^2-r^2\right)R

  • 3. Multiple Choice
    30 seconds
    1 pt

    A cone is cut through a plane Parallel to it's base and then the cone is formed on one side of that plane is removed. The new part that is left over on the other side of the plane is called

    Frustum of sphere

    Frustum of cone

    Frustum of pyramid

    Frustum of cylinder

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