When a figure is dilated,
The new linear dimension (side lengths, perimeters, etc) equals the old dimension multiplied by the scale factor.
The new area will be the old area multiplied by the square of the scale factor.
For example, a square of side 4m is dilated by a factor of 11.
The new side length is 4*11=44 m.
The new area is 4^2*(11^2)=16*121=1936
So for the hexagon,
New perimeter=old perimeter * scale factor
=24*52
=1248 metres