Find the ratio of the area of the circle circumscribed about a given square to the area of the circle inscribed in that square.
We want the ratio 
r22 : r12.
r22 : r12.We know r2 = r1√2.
| (r1√2)2 |
= | 2r12 |
= | 2 | . |
| r12 |
r12 |
1 |
Area Ratio, Circles and Square 1