Answer:
x^3y^2+x^2y^3-x^2-y^2
Step-by-step explanation:
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21
V = 4/3 pi r^3
r^3 = 3V / 4pi
r^3 = (3 * 972pi) /(4pi)
r^3 = 729
r = 9
Answer
B. 9 inches