Please choose the correct ending to complete the given sentence: Education and Communications: [header] How to determine a square and circle of equal area [title] Let r1 ^ 2 represent the area of the square, a (s). [title] Let πr2 ^ 2 = the area of the circle, a (c). [title] Set a (s) = a (c) via r1 ^ 2 = πr2 ^ 2.

Ending1: [step] ( write the area of the square in question before its relative value instead of the area (this is provided with the radius formula). [title] For the circle, you can simply write the area of the square and multiply by 1 for the radius of the circle. Ending2: [title] Then r1 ^ 2/r2 ^ 2 = π and r1/r2 = sqrt (π). [title] Given either r1 or r2, we can determine the other one. Ending3: [step] Put the r2 ^ 2 + πr2 together to form a circle the size of the square. [title] Put quadractopple/sr2[r1]. Ending4: [title] Bring the whole square and circle into a grid where it's equal. [step] Note that the diagonals of a grid are the same (( (1/s) )) ) as those of the squares.

Answer format: ending1/ending2/ending3/ending4