jermane122 jermane122

31-03-2021
Mathematics

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two circles have a scale factor of 3:2 what is the ratio of the areas of these circles?

3:2
9:4
13:12
12:26

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Аноним Аноним

31-03-2021

Answer:

ratio is 9;4

Step-by-step explanation:

let ratio be 3x ans 2x

by question

2πR/2πr=3x/2x

R/r=3/2

area

πR²/πr²=(3/2)²=9/4

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