Math (PreAlgebra) 8thG

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Find the volume of a sphere with a radius of 10 feet. Round to the nearest whole number.

V = (4/3)3.14(r)^3 = (formula)

I don't know what to do about the fraction, four over three (4/3), in the formula.... Show me how to do this please?

  • Math (PreAlgebra) 8thG -

    V = ( 4 / 3 ) * pi * r ^ 3

    V = ( 4 * pi * r ^ 3 ) / 3

    V = 4 * 3.1416 * 10 ^ 3 / 3

    V = 4 * 3.1416 * 1000 / 3

    V = 12566.4 / 3

    V = 4188.8 ft ^ 3

    Round to the nearest whole number

    V = 4189 ft ^ 3

  • Math (PreAlgebra) 8thG -

    Multiply:
    4/3* 3.14 * 10^2 =
    1256/3 =
    419 ft^3

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