Different quantity {couples} wish to dine at Domino’s Pizza on the weekends.
Different {couples} dine at completely different tables.
All the ready pizzas have radii of 18 cm.

A sure pair of consecutive even numbers share a slice of pizza which has an arc size of 54.97 cm.

A sure pair of consecutive odd numbers share a slice of pizza which has an arc size of 16.49 cm.

A sure pair of consecutive excellent squares share a slice of pizza which has an arc size of 5.49 cm.

What would be the arc size when the pair of first two prime numbers share a slice of pizza?
All the numbers lie within the vary [1,25]