4.
a 48 inch long cylindrical shaped cannon has a diameter of 4 inches. there are two 3 inch diameter cannonballs inside it. how much empty space is in the cannon barrel (round to the nearest hundredth and use 3.14 for pi)?

Step-by-step explanation:

First we calculate the volume of the cylinder.

Where r is the radius and l is the length of the cylinder.

We know that:

Then:

Assuming that the cannon balls are spherical then the volume of the 2 spheres is:

So the space left inside the cannon is

correct answer:

i^31 = -i

a is the right answer