SOLUTION: a cylindrical tennis ball container can contain maximum three ball stacked on one another.the top and bottom ball also touch the lid and the base of the container respect

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Question 744763: a
cylindrical tennis
ball container can
contain maximum
three ball stacked
on one another.the
top and bottom ball
also touch the lid
and the base of the
container
respectively if the
volume of a tennis
ball is 240 cm,then
what is the volume
of the container?

Found 2 solutions by mananth, MathLover1:
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
V ball = 240
V = 4/3 * pi * r^3
240 = 4/3 * pi * r^3
(240*3)/(4 * pi) = r^3
r^3=57.29
r=3.85 cm radius of the ball
diameter = 7.70cm
Since the balls are touching each other and 3 balls can be place in the cylinder
the height of cylinder = 3 * diameter
=>23.10cm
radius of cylinder = radius of ball
So cylinder volume = pi * r^2*h
r=3.85, h=23.10
substitute to get the answer
1075 cm^3 ( rounded off)

Answer by MathLover1(20850) About Me  (Show Source):
You can put this solution on YOUR website!
given:
cylindrical tennis ball container can contain maximum three ball stacked
on one another
the top and bottom ball also touch the lid and the base of the container
respectively - means, the sum of diameters of the three tennis balls is equal to height of the cylindrical container

a tennis ball is a sphere and the volume of a sphere is V=%284%2F3%29pi%2Ar%5E3; so, if the volume of a tennis ball is 240cm%5E3,then
240cm%5E3=%284%2F3%29pi%2Ar%5E3
240cm%5E3%2F%28%284%2F3%29pi%29=r%5E3
%283%2A240cm%5E3%29%2F%284%2A3.14%29=r%5E3
%28720cm%5E3%29%2F12.56=r%5E3
57.33cm%5E3=r%5E3
root%283%2C57.33cm%5E3%29=r
3.86cm=r........this is radius and we need diameter:
d=2r=2%2A3.86cm=7.72cm
now we know that the height of the cylindrical container is h=3d=3%2A7.72cm=23.16cm and we know the radius (which is equal to a radius of the tennis ball) is r=3.86cm

the volume of the container is:
V1=r%5E2pi%2Ah
V1=%283.86cm%29%5E2%2A3.14%2A23.16cm
V1=14.8996cm%5E2%2A72.7224cm

V1=1083.54cm%5E3