Question

Water is leaking onto the floor creating a circular pool with an area that increases at a rate of 3cm^2 per minute. How fast is the radius of the pool increasing when the width of the puddle is 20cm? And they wonder why nothing ever gets done around the house :)

Answer 1

lol.... someones been spying on me ;)

Answer 2

spying ....na...na ......its the question arose on my mind.

Answer 3

i wonder if a could so for copyright infringement .... lol

Answer 4

sue even ..... my next chore is to rearrange my synapsis so that they are closer together

Answer 5

i need an answer.

Answer 6

of course you do; but the thing is this... i already figured it out a loooong time ago. then cleaned up the puddle ;)

Answer 7

i need an answer...

Answer 8

do tell, why would you "need" an answer to a statement I posted on my facebook account? That seems more of a want then a need.

Answer 9

idk what u r talking abt but i need an asnwer,...

Answer 10

i need it cuz its question arising on my mind frequently.

Answer 11

lol.... mine too :)

Answer 12

hey man i need an answer....do u have or not?

Answer 13

of course i do, i have the answers to all my questions .... dont you?

Answer 14

wtf u r talking .........i only need an answer..i dont need anything other than that

Answer 15

the answer is ..... dont stalk me. plain and simple.

Answer 16

you wont like the other answers I have ;)

Answer 17

if u dont have an answer than why did u disturb me ?

Answer 18

why are you disturbed? you feeling guilty of something? you thinking maybe your being mischevious? do tell...

Answer 19

Sathiprakash, rather than saying I need an answer, tell us what you have come up with so far...

Answer 20

its the question arose on my mind while am studying MAT i mean mental agillity test during my preparation on medical exam.

Answer 21

Oh, it is a very simple calculus problem, but it's been so long since i've done it someone can check on me.
\[a =pir ^{2}\]\[dA =2pir(dr/dt)\]

Answer 22

i dint get it.

Answer 23

sath came up with so far ; is copied a statement from my facebook page and claims it as his own .... the first part is from a library textbook that I found intriguing, the last bit was my thoughts about why someone would not just clean it up to begin with ;)

Answer 24

You two are funny. How did Sath come across your facebook page?

Answer 25

he looked up Ynohtna Attertsim :)

Answer 26

wtf......no/

Answer 27

What a name. I would never get to your page. I would make too many typos.

Answer 28

lol .... yeah, my kids wanted me to have a facebook, so I did it in gest..

Answer 29

its just me name backwards

Answer 30

Clever. Sathi fervently denies the charge.

Answer 31

Sathi walks a thin line lol

Answer 32

a big lol here..

Answer 33

anyway sorry amistre..i like that question and wan answer,,,so i did this stuff here.

Answer 34

me proof is this:

Answer 35

'sok :) I liked that question too :)

Answer 36

anyway its lot of funn here ... and thanks too..

Answer 37

There seems to be an admission, the mystery remains how Sathi would come across your page. Anyway above, Sathi plug in values for r=10 and dr/dt = 3. That gives you the area. Now you want to know when pool is 20 which is really when radius is 10. I don't know Amistre tell us how to do your problem.

Answer 38

Well, you derive the Area of a circle with respect to time; then solve for dr/dt knowing that dA/dt = 3

Answer 39

A = pi r^2

A' = 2pi r r'

r' = A'/(2pi r)

r' = 3/(2pi 10) if I recall it from so long ago lol

Answer 40

r' = 0.0477.... cm/sec maybe?

Answer 41

per min..

Answer 42

Let me go to your page. There has been so much debate. First it was argued Amistre is a woman. Then some kid said yesterday, Amistre is my Dad. May be I can solve that mystery on Facebook.

Answer 43

lol ..... facebook can solve all mysteries ;)