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OpenStudy (anonymous):
Leah has two congruent beach balls. The diameter of one ball is 20 inches. Which choice is the closest for the volume of the second ball?
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jimthompson5910 (jim_thompson5910):
What is the volume of the ball with a diameter of 20 inches?
OpenStudy (anonymous):
V = 4 3 πr3
jimthompson5910 (jim_thompson5910):
that's the basic formula for the volume of a ball
OpenStudy (anonymous):
4188.8
jimthompson5910 (jim_thompson5910):
in this case, r = 10 (since 10 is half of 20)
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OpenStudy (anonymous):
so what do i do next
jimthompson5910 (jim_thompson5910):
so that's the approximate volume of the first and second ball because they are congruent (ie the same size and shape)
OpenStudy (anonymous):
thanks
jimthompson5910 (jim_thompson5910):
yw
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