43.2pi cubic centimeters (about 135.648)
First, find the volume of the glass using the formula (pi)r^2*h.
pi * 3^2 * 8
pi * 9 * 8
72pi
Now, find 60% of that by multiplying by 0.6.
72pi * 0.6
43.2pi
If you want, you can estimate the answer by using 3.14 as pi.
43.2 * 3.14
135.648