| Answer | Crossword Clue |
|---|---|
| ARENA | Squared circle. |
| PIR | .. squared (circle area) |
| PIR | ..-squared (circle formula) |
| PIR | ... squared (circle area calculation) |
| AREA | Pi r squared, for a circle |
| AREA | Pi r-squared for a circle |
| quadratrix | a curve by which a circle may be squared |
| quadratrixes | QUADRATRIX, a curve by which a circle may be squared |
