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anonymous
 4 years ago
Oil spilled from a ruptured tanker is spreading in a circular pattern. If the radius of the circle is
increasing at the constant rate of 1.5 feet per second, how fast is the area of the spill increasing when
the radius of the spill is 42 feet?
anonymous
 4 years ago
Oil spilled from a ruptured tanker is spreading in a circular pattern. If the radius of the circle is increasing at the constant rate of 1.5 feet per second, how fast is the area of the spill increasing when the radius of the spill is 42 feet?

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goformit100
 4 years ago
Best ResponseYou've already chosen the best response.0use speed time formula...

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0I've never heard of that.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\(A=\pi r^2\) and so \(A'=2\pi rr'\)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0you are told \(r'=1.5\) and \(r=42\) plug in the numbers and get \(A'\) in one step

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0wow, that was easy. I'm terrible at these.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yeah, i have to admit that one was real easy they get harder

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0well only the formulas get harder to figure out, i am willing to bet that you knew the formula for the area of a circle

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0yeah, I was just thinking like A=pi(r^t/1.5)^2 then I was super confused

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0That made absolutely no sense to me.

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0The minute hand on a watch is 8mm long and the hour hand is 4 mm long. How fast is the distance between the tips of the hands changing at one o'clock? THat's the hardest one I have done myself.
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