SOLUTION: I need to write the area of a water puddle as a function of its radius using function notation. Each minute, the radius increases by 0.1cm. I have tried to model this with a quadra
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-> SOLUTION: I need to write the area of a water puddle as a function of its radius using function notation. Each minute, the radius increases by 0.1cm. I have tried to model this with a quadra
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Question 1197622: I need to write the area of a water puddle as a function of its radius using function notation. Each minute, the radius increases by 0.1cm. I have tried to model this with a quadratic equation, but I am not sure whether "a" should be the time value or the radius value. I greatly appreciate any help you can offer! Answer by ikleyn(52787) (Show Source):
You try to re-tell the problem in your own words, but some important details remain unclear.
Does this problem have a standard formulation in the textbook ?
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OK, I got a comment/(an info) from you describing your problem.
So, our puddle grows from zero, so the radius is
r = 0.1*t, where the radius r is in centimeters and time t is in minutes.
The area of the puddle is the area of the circle
area = = = = .
