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Area calculation for overlapping region

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Khadija Khan
Khadija Khan 2016-4-24
回答： Khadija Khan 2016-4-26
I have three overlapping network in a service area with Radius=600,200 and 200. the networks with Radius 200 are inner networks in the service area of radius 600. I use for loop to input radius , and then calculate area. But I don't know how to calculate
As=A1-(A2+A3). where
A1=pi*600^2,
A2=pi*200^2, and
A3=pi*200^2.
please help me

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采纳的回答

Image Analyst
Image Analyst 2016-4-24
That's the formula for circumference, not area! You need to square the radius
A1 = pi * 600^2
A2 = pi * 200^2
A3 = pi * 200^2
As = A1 - (A2 + A3)

更多回答（2 个）

Khadija Khan
Khadija Khan 2016-4-24
编辑：Khadija Khan 2016-4-24
My Question is still there. How to calculate As=A1-(A2+A3) like I input R and Calculate A inside loop. But How to Calculate AS using equation As=A1-(A2+A3). how can I take these values of A1,A2 and A3 from loop. Plz help
  1 个评论
Image Analyst
Image Analyst 2016-4-24
Just like I showed you in my answer. If you want to save all of them, then give As an index:
As(loopIndex) = A1-(A2+A3);

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Khadija Khan
Khadija Khan 2016-4-26
Thanks Image Analyst I solved it. Thanks for your help.

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