Question

A globe in a brass stand has a diameter of 40 in . what is the volume of the globe to the nearest cubic inch?

Answer 1

You take half of the diameter to find the radius. 40 divided by 2 = 20 

2* 3.14* 20 = 125.6in cubed 

Don't forget to put 2 above inches for volume.

Answer 2

The Globe is in the shape of a sphere, so we will use the volume of the sphere formula.


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Formula: Volume of a sphere
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$Volume \ of \ a \ sphere = \frac{4}{3} \pi r^3$

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Given Diameter, Find Radius
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Diameter = 40 in
Radius = 40 ÷ 2 = 20 in

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Apply Formula
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$Volume \ of \ the \ sphere = \frac{4}{3} \pi (20)^3$
$Volume \ of \ the \ sphere = 33510 in^3$

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Ans: Volume of the Globe is 33510 in³
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