If the area of a is 81 times that of b l, what is the ratio of the perimeters?

If the area of A is 81 times that of B l, what is the ratio of the perimeters?
to get the ratio of the perimeters we proceed as follows:
linear scale factor =√(area scale factor)
thus
linear scale factor=√81
linear scale factor=9
thus the ratio of the perimeter is, perimeter of A is 9 times that of B

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