Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
sweett2639
Group Title
You're filling a water balloon with a spherical shape. If the water is coming in at 4 cubic inches per second, how fast is the radius changing when the volume is 200 cubic inches? (answer: 0.0241 in/sec)
 one year ago
 one year ago
sweett2639 Group Title
You're filling a water balloon with a spherical shape. If the water is coming in at 4 cubic inches per second, how fast is the radius changing when the volume is 200 cubic inches? (answer: 0.0241 in/sec)
 one year ago
 one year ago

This Question is Closed

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351471895315:dw
 one year ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
@sweett2639 do you follow?
 one year ago

sweett2639 Group TitleBest ResponseYou've already chosen the best response.0
\[v= \frac{ 4 }{ 3 } \pi r ^{3}\]i understand that the volume of a sphere is and that\[\frac{ dv }{ dt } = 4 inches ^{3}/\sec\] but not much more than that
 one year ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351472335325:dw
 one year ago

sweett2639 Group TitleBest ResponseYou've already chosen the best response.0
so you set 200 equal to v and moved the equasion around so that r is 3.628
 one year ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351472455417:dw
 one year ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
Right, we know that the volume is 200 in^3 at the moment of interest, therefore we can find what the radius of the sphere is at that moment
 one year ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
dw:1351472567598:dw
 one year ago

sweett2639 Group TitleBest ResponseYou've already chosen the best response.0
everytime i try to calculate r, i get the wrong number
 one year ago

baldymcgee6 Group TitleBest ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=4%2F%284*pi*%283.628%29%5E2%29 just make sure you type it into the calc correctly.
 one year ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.