Question

What is the volume of the following cylinder (with a hole)? Use 3.14 for л.

Round to the nearest 10th.
Enter the numerical answer only. Do not enter units.

Answer 1

Explanation:

To start, let's review the volume of a cylinder:

V = pi(r^2) * h

Since this cylinder has a hole (it looks like a roll of paper towels XD), we can basically get the volume of the large cylinder - the volume of the space inside:

V(cylinder with hole) = (3.14*8^2*30) - (3.14*2^2*30)

Just for reference, the 8 and the 2 came from the radius, which is half the diameter (the 'width' of the cylinder)

(3.14*64*30) - (3.14*4*30)

6028.8 - 376.8

5652 cm^3

Hope this helps!