Question

What is the exact volume of a sphere that has a radius of 8.4 in.?

[ ? ] (pi) in3

Answer 1

@sleepyjess @iGreen

Answer 2

First what is the formula for volume of a sphere?

Answer 3

\[V=\frac{ 4 }{ 3 }\pi r^{2}\]

Answer 4

Close, it should be \(\dfrac 43 \pi r^3\)

Answer 5

sorry, thats what i meant

Answer 6

Ok :)

Answer 7

so just substitute in r

Answer 8

754.654

Answer 9

How did you get that?

Answer 10

\(\dfrac 43 * 3.14 * 8.4^3\)

Answer 11

2481.4540799999958

Answer 12

I'm getting 2481.4508, but my calculator doesn't go as many decimals out as your it looks like

Answer 13

ya

Answer 14

They don't tell you to round to a certain decimal place?

Answer 15

OOOHHHH exact volume, leave it in terms of \(\pi\)

Answer 16

ya not 3.14

Answer 17

yep, sorry

Answer 18

your fine

Answer 19

what do we do now?

Answer 20

@sleepyjess ???

Answer 21

@iGreen @BloomLocke367

Answer 22

what do you need help with?

Answer 23

the question

Answer 24

he left with out finishing!

Answer 25

don't multiply out the pi... you'll have the pi symbol in the answer

Answer 26

OR SHE

Answer 27

ok

Answer 28

so.. what's 8.4^3?

Answer 29

iGreen, don't you dare steal this one XD

Answer 30

\(V = \dfrac{4}{3} r^3\)

Plug in 8.4 for 'r', this will give you the answer in terms of pi.

Answer 31

xD

Answer 32

I was tagged :P

Answer 33

I got here first XD

Answer 34

790.272

Answer 35

the more the merrier!

Answer 36

Correct! :P

Answer 37

Yep, good job!

Answer 38

\(790.272 \pi~in^3\)

Answer 39

ok thx!

Answer 40

Sorry, I had to go do something :(