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8th grade

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Dimensions of a paper cup. The volume of a paper cup, shaped like a circular cone is 30pie cubic centimeters. The radius of the top of the cup is 3 centimeters. What is the height of the cup?

  • 8th grade -

    v = (1/3)(π)(r^2)h
    30pi cm^3=(1/3)(π)(3^2)h

    find h.

  • 8th grade -

    v = (1/3)(ð)(r^2)h
    3v = ð (r^2)h
    3v/ð = (r^2)h
    3v/ð(r^2)= h

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