How to find the area of a circle?
回答 (7)
2009-06-07 9:52 am
✔ 最佳答案
Use the formula A=πr^2 for finding the erea of a circle..where A is the erea, π=3.1416, and r is the radius of a circle.
Hope that helps..
2009-06-07 9:41 am
pi times the radius squared.
2009-06-07 9:59 pm
The area of a circle is pi*radius^2 or if you want, (pi*diameter^2)/4.
2009-06-07 12:41 pm
Area of a circle = pi * radius * radius
參考: Circle
http://en.wikipedia.org/wiki/Circle
2009-06-07 9:51 am
multiply pi times the squared radius
π x (r^2) ....... (only the r is squared)
π x (r^2) ....... (only the r is squared)
2009-06-07 9:43 am
area of a circle = pie* (radius^2)
i.e pie*r^2
= (22/7)* r^2
i.e pie*r^2
= (22/7)* r^2
2009-06-07 10:21 am
A = pi r^2
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