A square with side length 5.5 mm is increased by a factor of 11. What will be the perimeter of the square after dilation?

A dilation by a factor of 11 multiplies each side length by 11, so the new side is 5.5 × 11 = 60.5 mm. A square has four equal sides, so its perimeter is 4 × 60.5 = 242 mm. The correct choice is 242 mm.

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