Posted by Rebecca on .
A tennis ball can in the shape of a cylinder holds three tennis balls snugly. If the radius of a tennis ball is 3.5 cm, what percentage of the tennis ball can is occupied by air?

MATH214 
bobpursley,
volume tennis ball can= PIr^2*3r
volume of tennis balls=4/3 PI r^3
divide the second by the first. 
MATH214 
Thomas,
2.3cm^3

MATH214 
Thomas,
.022508352%