dependswhat's r
r2+r2 = 2r2
that is 14,519.4 squared
If r-squared = theta then r = ±sqrt(theta)
+r and -r
its 2 pie r squared BUT you have to add back the base (a circle) which is pie r2 The original formula is 4 pie r squared Your new formula is (2 pie r squared + pie r squared)
Pi r squared is the formula for the area of a circle. 2 pi r squared is twice that.
That is the formula for the area of a circle; r refers to the radius, and pi is approximately 3.14. r squared means that you multiply r x r.
box
radius
The equation for a circle of radius r and centre (h, k) is: (x - h)² + (y - k)² = r² If the centre is the origin, the centre point is (0, 0), thus h = k = 0, and this becomes: x² + y² = r²
area equals pi r squared therefor r squared equals area over pi. Now find square root of r squared and you have "R" (radius) = 2.821
As in pie r squared? r = radius.