# Intermediate Geometry : Spheres

## Example Questions

### Example Question #3 : How To Find The Diameter Of A Sphere

The circumference of a sphere is . Find the radius.

Explanation:

If the circumference of a sphere is , that means we can easily solve for the diameter by using . This is the equation to find the circumference.

By substituting in the value for circumference (), we can solve for the missing variable

To find the radius of the sphere, we need to divide this value by :

### Example Question #4 : How To Find The Diameter Of A Sphere

Find the diameter of a sphere if the volume is .

Explanation:

Write the formula for the volume of a sphere.

Plug in the given volume and solve for the radius.

The diameter is double the radius.

### Example Question #5 : How To Find The Diameter Of A Sphere

Find the diameter of a sphere if the volume is .

Explanation:

Write the volume for the sphere.

Substitute the volume and solve for the radius.

Double the radius to find diameter.

### Example Question #6 : How To Find The Diameter Of A Sphere

Find the diameter of a sphere with the volume listed below.

Explanation:

In order to solve, we must the given volume into the volume formula for a sphere.

Divide both sides by pi.

Multiply both sides by 3.

Take the cube root of both sides to find the radius.

Double the radius to get the diameter, diameter is 12.

### Example Question #7 : How To Find The Diameter Of A Sphere

Find the diameter of a sphere if it has a volume of .

Explanation:

Recall how to find the volume of a sphere:

, where  is the radius of the sphere.

Now, since the radius is half the diameter, the equation for the volume of a sphere can be rewritten as thus:

, where  is the diameter of the sphere.

Rewrite the equation to solve for .

Now, plug in the volume of the sphere to find the diameter.

### Example Question #8 : How To Find The Diameter Of A Sphere

Find the diameter of a sphere if it has a volume of .

Explanation:

Recall how to find the volume of a sphere:

, where  is the radius of the sphere.

Now, since the radius is half the diameter, the equation for the volume of a sphere can be rewritten as thus:

, where  is the diameter of the sphere.

Rewrite the equation to solve for .

Now, plug in the volume of the sphere to find the diameter.

### Example Question #1 : How To Find The Diameter Of A Sphere

Find the diameter of the sphere if it has a volume of .

Explanation:

Recall how to find the volume of a sphere:

, where  is the radius of the sphere.

Now, since the radius is half the diameter, the equation for the volume of a sphere can be rewritten as thus:

, where  is the diameter of the sphere.

Rewrite the equation to solve for .

Now, plug in the volume of the sphere to find the diameter.

### Example Question #10 : How To Find The Diameter Of A Sphere

Find the diameter of a sphere if it has a volume of .

Explanation:

Recall how to find the volume of a sphere:

, where  is the radius of the sphere.

Now, since the radius is half the diameter, the equation for the volume of a sphere can be rewritten as thus:

, where  is the diameter of the sphere.

Rewrite the equation to solve for .

Now, plug in the volume of the sphere to find the diameter.

### Example Question #61 : Spheres

Find the diameter of a sphere if it has a volume of .

Explanation:

Recall how to find the volume of a sphere:

, where  is the radius of the sphere.

Now, since the radius is half the diameter, the equation for the volume of a sphere can be rewritten as thus:

, where  is the diameter of the sphere.

Rewrite the equation to solve for .

Now, plug in the volume of the sphere to find the diameter.

### Example Question #62 : Spheres

Find the diameter of the sphere if it has a volume of .

Explanation:

Recall how to find the volume of a sphere:

, where  is the radius of the sphere.

Now, since the radius is half the diameter, the equation for the volume of a sphere can be rewritten as thus:

, where  is the diameter of the sphere.

Rewrite the equation to solve for .

Now, plug in the volume of the sphere to find the diameter.

Make sure to round to  places after the decimal.