the areas of two circles are in the ratio 36:49.Find the ratio of their circumference?
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Answered by
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ratio of areas= 36:49
area of 1st circle. 36
_____________. =. __
area of 2nd circle. 49
πr^2. 36
___. =. __.
πr1^2. 49
r^2. 36
___. =. __
r1^2. 49
r. √36
__. =. __
r1. √49
r. 6
__.= __
r1. 7
ratio of their circumference
2πr.
___
2πr1
r
__
r1
6
_
7
6:7
area of 1st circle. 36
_____________. =. __
area of 2nd circle. 49
πr^2. 36
___. =. __.
πr1^2. 49
r^2. 36
___. =. __
r1^2. 49
r. √36
__. =. __
r1. √49
r. 6
__.= __
r1. 7
ratio of their circumference
2πr.
___
2πr1
r
__
r1
6
_
7
6:7
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Answered by
1
Answer:
6:7 is the correct answer
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