Answer:
C
Step-by-step explanation:
V=4/3πr^3
1000=4/3πr^3
1000=(4/3(3.141593))(r^3)
Step 1: Subtract 4.18879r^3 from both sides.
1000−4.18879r3=4.18879r^3−4.18879r^3
−4.18879r^3+1000=0
Step 2: Subtract 1000 from both sides.
−4.18879r^3+1000−1000=0−1000
−4.18879r^3=−1000
Step 3: Divide both sides by -4.18879.
−4.18879^3
/−4.18879 = −1000
/−4.18879
r^3=238.732415
Step 4: Take cube root.
r=(238.732415)^1/3
r=6.203505