Answer
Tylor's wedge is larger
Explanation
The interior angle of the whole circular cheese block measures 360°. Given that the block was cut into 6 congruent sectors, then the interior angle of each sector measures:

Arc length formula

where r is the radius and θ is the interior angle of the sector.
The cheese block has a radius of 9 cm. Substituting r = 9 cm and θ = 60° into the formula, the arc length of the cheese wedge is:

The arc length of Tylor's wedge is 12 cm, then it is larger than Priya's wedge