###### Asked in Math and ArithmeticGeometryVolume

Math and Arithmetic

Geometry

Volume

# How many cubic feet are in a 30 foot diameter sphere?

## Answer

###### Wiki User

###### June 11, 2010 9:49AM

Volume of sphere = 4/3*pi*radius3

Volume = 4500*pi cubic feet

## Related Questions

###### Asked in Volume, Mathematical Analysis

### How many gallons of water in a 3 meter diameter sphere?

The volume (V) of a sphere equals 4 over 3 times 3.14 times its
radius squared.
One cubic foot of water equals 7.48 cubic feet.
One meter equals 3.28 feet (I like working in feet instead of
meters)
Volume works out to be 499.234 cubic feet.
499 cubic feet times 7.49 gallons per cubic foot equals
3,734.529 gallons.

###### Asked in Math and Arithmetic, Units of Measure, Area, Volume

### How do you get the cubic feet volume of a ball?

This only works with a spherical ball, not with, for example, a
football.
You'll probably need a calculator.
-- Measure the diameter of the ball ... the fattest part ... in
inches.
-- Take half of the diameter; that's the "radius" of the
ball.
-- Calculate the "cube" of the radius. That's (radius) times
(radius) times (radius).
-- Multiply that answer by 4.1888 .
-- The answer is the volume of the ball, in cubic
inches.
-- If you want it in cubic feet, divide the cubic inches by
1,728.
The number you wind up with is the volume of the entire
ball, including the skin, so it's a little more than the
volume of the air inside. Here are a few benchmarks, just to make
sure the answer you get in the "ball" park: 6-inch diameter sphere
= 113 cubic inches = 0.065 cubic foot
1-ft diameter sphere = 905 cubic inches = 0.524 cubic foot 2-ft
diameter sphere = 7,238 cubic inches = 4.189 cubic feet
======================================== Math :-(
Volume of a sphere with radius ' R ' = 4/3 pi R3 .
4/3 pi = 4.1888 (rounded)
1 cubic foot = 1,728 cubic inches

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