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Scott, MIT Graduate
Category: General
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Experience:  MIT Graduate, United States Traveler, Information Finder
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Fin the area of a circle whose circumference is 20rr units

Resolved Question:

Fin the area of a circle whose circumference is 20rr units.
Submitted: 7 years ago.
Category: General
Expert:  Scott replied 7 years ago.

Hi there!


I can't move this to the math category... the system is broken tonight.


Can you tell me what "rr" is?




Customer: replied 7 years ago.
Expert:  Scott replied 7 years ago.



So it says that the circumference is:

20 radius units


Is that right?



Customer: replied 7 years ago.
sorry, I believe it is the pie symbol
Expert:  Scott replied 7 years ago.

Ok, that makes a lot of sense!


C = 20pi


Get the radius first:

C = 2piR


Plugging in C:

2piR = 20pi


Divide by 2pi:

R = 10


Get the area, using the area formula:

A = pi*R^2


A = pi*10^2


A = 100pi square units


Let me know if you have any questions,


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