Find THe Volume Please.?

  1. profile image45
    "ForeEva"posted 7 years ago

    Find THe Volume Please.?

    James has to replace a plaster cast ornament he has broken. it is in a shape of a cone. The measurements of the cone are:diameter 5.08 cm and the height is 8.1 cm. Find it's volume rounding appropriately.

  2. Zazuzu profile image79
    Zazuzuposted 7 years ago

    Volume of cone = (1/3) * pi * r^2 * height

    if the diameter is 5.08, the radius is 2.54.

    (1/3) * pi * (2.54)^2 = 6.75610......

    the answer is about 6.75610

  3. catman3000 profile image85
    catman3000posted 7 years ago

    Use the formula:

    Volume = 1/3 x Pi x radius x radius x height.

    The radius of the cone is 2.54 as this half of 5.04.

    Now all you need to do is sub in the height and radius into the formula given above:

    1/3 x 3.14 x 2.54 x 2.54 x 8.1

    which gives 6.8 centimetres squared rounded to 1 decimal place.