The scale factor can be determined by dividing the circumference of the larger circle by the circumference of the smaller circle:
Scale factor = Circumference of X / Circumference of X′
Scale factor = 120 cm / 90 cm = 1.33
Therefore, the scale factor is 1.33, which can also be expressed as the fraction 4/3.
If circle X
is constructed so that it has a circumference of 120 centimeters, and is dilated to create circle X′
with a circumference of 90 centimeters, then what is the scale factor? Enter any non-whole number as a fraction.(1 point)
cm
1 answer
1 answer