Question

WILL GIVE MEDAL AND FAN YOU
The volume of a sphere is 1674 m. What is the surface area of the sphere to the nearest tenth?

Answer 1

\[V_{sphere} = \frac{4}{3}\pi{r^3}\]

Answer 2

Solve for \(r\) and then plug that into the equation for surface area.

Answer 3

Sorry im probably being so bothersome right now with my questions. I have a test tomorrow and it is also the end of the grading period I have a B in the class which messes up my straight A status :(

Answer 4

\[SA_{sphere} = 4\pi{r^2}\]

Answer 5

Im already confused how do you solve for R

Answer 6

\[1674 = \frac{4}{3}\pi{r^3}\]

Answer 7

divide 1674 by 4/3?

Answer 8

Yes. And then divide that by \(\pi\), and take the cube root.

Answer 9

I got 7.365

Answer 10

That's the correct value for \(r\).

Answer 11

Alright so 4xpix7.3

Answer 12

Don't forget that it's \(r^2\).

Answer 13

670

Answer 14

rounded

Answer 15

You lost some accuracy from just using 7.3 instead of 7.365 but your answer is right.

Answer 16

not according to my study guide it should be 1462.5

Answer 17

Your study guide is wrong: http://www.wolframalpha.com/input/?i=sphere+with+volume+1674

Answer 18

the study guide is automatically made it cant be wrong..

Answer 19

But then again my teacher is lazy...

Answer 20

WolframAlpha isn't wrong.

Answer 21

If doing it by hand and wolfram alpha both disagree with your study guide it's either a misprint in the question or in the answer.

Answer 22

Alright thanks anyways. I got like 10 more to go :( and its 1 am looks like no sleep for me lol