The circumstance of a circle changes from 20 to 4 after a dilation. what was the scale factor of the dilation? a. 1/25 b. 1/5 c. 5 d. 25

asked Oct 21, 2021 158k views

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The circumstance of a circle changes from 20 to 4 after a dilation. what was the scale factor of the dilation?

a. 1/25
b. 1/5
c. 5
d. 25

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1 vote

Answer:

Option B

Explanation:

The circumference of a circle changes from (pre-image)20 to 4(image) after a dilation.

$Scale\ Factor=(Circumference\ of\ image)/(Circumference\ of\ pre-image) \\\\Scale\ Factor=(4)/(20)\\\\Scale\ Factor=(1)/(5)$

Woloski answered Oct 27, 2021

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