Question

If circle
O
is constructed so that it has a circumference of 160 meters and is dilated to create circle
O'
with a circumference of 400 meters, then what is the scale factor? Enter any non-whole number as afraction.
(1 point)
5
2
2
5
2.5
6

Answer 1

Scale factor = new circumference / original circumference = 400/160 = 5/2.