Answer
$4r^3\pi$.
Work Step by Step
The volume of one ball is $\frac{4}{3}r^3\pi$l; thus, the $3$ balls in total have a volume of $4r^3\pi$.
Algebra 2 (1st Edition)
by Larson, Ron; Boswell, Laurie; Kanold, Timothy D.; Stiff, Lee
Published by
McDougal Littell
ISBN 10:
0618595414
ISBN 13:
978-0-61859-541-9
Chapter 5 Polynomials and Polynomial Functions - 5.1 Use Properties of Exponents - 5.1 Exercises - Problem Solving - Page 335: 52a
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