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anonymous
 one year ago
I need help on the first few steps, I'm not to sure how to do this. A vat of milk has spilled on a tile floor. The milk flow can be expressed with the function r(t) = 4t, where t represents time in minutes and r represents how far the milk is spreading.
The spilled milk is creating a circular pattern on the tile. The area of the pattern can be expressed as A(r) = πr2.
anonymous
 one year ago
I need help on the first few steps, I'm not to sure how to do this. A vat of milk has spilled on a tile floor. The milk flow can be expressed with the function r(t) = 4t, where t represents time in minutes and r represents how far the milk is spreading. The spilled milk is creating a circular pattern on the tile. The area of the pattern can be expressed as A(r) = πr2.

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anonymous
 one year ago
Best ResponseYou've already chosen the best response.0A vat of milk has spilled on a tile floor. The milk flow can be expressed with the function r(t) = 4t, where t represents time in minutes and r represents how far the milk is spreading. The spilled milk is creating a circular pattern on the tile. The area of the pattern can be expressed as A(r) = πr2. Part A: Find the area of the circle of spilled milk as a function of time, or A[r(t)]. Show your work. (6 points) Part B: How large is the area of spilled milk after 4 minutes? You may use 3.14 to approximate π in this problem. (4 points)

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Whole problem, but just need help getting through the first one then maybe I'll understand it.

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1substitute for r = 4t in A(r) = pi r^2

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Ok, so after I do that I would times t^2? Or would I leave it alone and times it by 3.14?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0I know I would have to do the rate of change for the second part, but would it just be 3.14 times 16?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1thats the answer to Part A for Part B plug in t = 4 into 16 pi t^2 and work it out.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0Oh ok give me a moment

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0welshfella can u help me with a question?

anonymous
 one year ago
Best ResponseYou've already chosen the best response.016 pi (4)^2 16 pi (16) 16 (50.24) 803.84 This is what I got, not to sure if it's right or wrong.

anonymous
 one year ago
Best ResponseYou've already chosen the best response.0And yes it was sorry for missing your comment haven't been on
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