hi

I want to find the area inside the circle r=2, with x>0 and y>1

I evaluate the

integral (from x=0 to x=2) of the ingral (y=1 to y=+sqrd.root.of(4-x^2)of dydx

and come up with pi-2 = 1.14 but book answer is 1.23

pls help!!

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- Dec 5th 2009, 01:12 PMpepsiintegration to find area please
hi

I want to find the area inside the circle r=2, with x>0 and y>1

I evaluate the

integral (from x=0 to x=2) of the ingral (y=1 to y=+sqrd.root.of(4-x^2)of dydx

and come up with pi-2 = 1.14 but book answer is 1.23

pls help!! - Dec 5th 2009, 01:32 PMadkinsjr
The integral is the area of of the circle. So the total area should be:

The indefinite integral is

http://integrals.wolfram.com/index.j...D&random=false

So did you calculate

Your book must be wrong. The area of a circle with radius is . You can show this using integration as I did above. - Dec 5th 2009, 01:50 PMpepsi