Question

Find the volume of each sphere. Give each answer in terms of pi and rounded to the nearest cubic unit.

Answer 1

Volume = 4/3 * pi * r^3

r = radius

Answer 2

i have gotten \[V=\frac{ 4 }{ 3 }\pi (7.5)^3\]

Answer 3

that's right. then simplify it

Answer 4

\[V=\frac{ 4 }{ 3} \pi(421.87)\]

Answer 5

thats where i got lost

Answer 6

well, 7.5^3 = 421.875
then times 4, get
421.875 * 4 = 1687.5
then divided by 3, get
1687.5/3 = 562.5

so, volume = 562.5 pi

Answer 7

ty @RadEn for explaining

Answer 8

you're welcome :)