To figure this out we first need to find the volume of the bowling ball (we will assume it doesn't have the finger-hole things and is a perfect sphere).
The formula for the volume of a sphere is V=(4/3)πr^3.
The radius is half the diameter, 8.4 inches, so r=4.2 inches.
Now we plug this in-
V= (4/3)π(4.2)^2 = 23.52π which is approximately 73.89.
Now we use this value to find the weight. To do this we multiply the volume by .05 and get approximately 3.69 lb.
