suppose an oil pipe is leaking and the leak is creating a circle of oil on the ground that is growing .the oil continues to leak,enlarging the circle ,so that the area grows at a constant rate of 3 square meters per hour......
A. describe the rate at which the perimeter of the circleof oil changes over time.
B.make a graph of the preimeter of the circle as a function of time ..
C.find the perimeter of the circle at T = 60 minutes ..and T=60.5minutes ..use this values to give an estimate of how fast ,in meters per hour,the perimeter of the circle is changing
2006-09-15 10:03:24 · 5 answers · asked by beauty mirna 3 in Education & Reference ➔ Homework Help
Try this:
Area=(3.14)r^2
Circumference=2(3.14)r
Combine the two equations to get: C= 2(3.14){sq.root of(A/(3.14))}
For everytime Area increases, the circumference will increase proportionally.
For the last question, find the difference of the circumference from a larger circle to the smaller circle. Divide that by 3600 seconds, this should give you a circumference for every second. Since the last question asks for the change of perimeter in 30 seconds. Just multiply 30 times that circumference answer you got for every second. This should answer question C.
I wish I could draw out question B, but this message board limits my options. Other make the y-axis to show perimeter, and the x-axis to show time.
2006-09-15 10:36:52 · answer #1 · answered by Anonymous · 1⤊ 0⤋
omg! I'm so glad that i've passed high school and college. I wouldn't begin to know where to start to help you. I would look online for some specific mathematic websites or look for a tutor to help you. sounds like alegbra and why did i need to pay attention to that to become a bartender? hmmm.. guess i didnt pay attention. sorry good luck
2006-09-15 10:12:55 · answer #2 · answered by kimberc13 3 · 0⤊ 1⤋
dude...you gotta do this on your own but if you can't, get a TUTOR! it helps...this is to help you, not to cheat yourself...
2006-09-15 10:11:39 · answer #3 · answered by Anonymous · 0⤊ 1⤋
yea, do it your self.
when you get homework answeres from things like this, or your friends, you'll never learn how to do it!
ask a parent, call a relitive, wtf call a teacher!
2006-09-15 10:12:17 · answer #4 · answered by Maybeh 2 · 0⤊ 1⤋
do it yourself... dont ask other ppl
learn and do it urself
2006-09-15 10:10:37 · answer #5 · answered by thandihava2004 1 · 0⤊ 1⤋