The length of a rectangle is increasing at a rate of 4 cm/s and its width is increasing at a rate of 5 cm/s. when the length is
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So First of all we need to know how to find the area of a circle.
Assuming that the apple pie is the shape of a circle
The formula for area is
Well we know that the radius = 3.14
And we know that = 3.14 as well.
All we have to do is multiply..
3.14 x = 30.95
So the area of the pie is 30.95 in
Good Luck! :)