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 Help, please :)

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avatar+8581 

Which of the following expresses the number of meters of a constant must travel in a 3-lap race where the course is a circle of radius R Meters?

 

1. 3R

2. 3PiR

3. 3PiR^2

4. 6R

5. 6piR

 

I would think that it's " 3".

Any help is appreciated. THank you :)

 Jan 21, 2016

Best Answer 

 #4
avatar+129847 
+15

Distance traveled in one lap = 2*Pi*R  = the circumference of a circle

 

So.....3 times this =   3* [2*Pi *R]  =  6*Pi*R

 

Does that make sense???

 

 

cool cool cool

 Jan 21, 2016

5+0 Answers

 #1
avatar+129847 
+10

Note, Hayley....distance traveled on one lap   = 2*Pi*R

 

Do you see the answer??

 

 

 

cool cool cool

 Jan 21, 2016
 #2
avatar+8581 
0

Hm.. I guess I just don't understand

 Jan 21, 2016
 #3
avatar+8581 
0

I think, I might stay offline for awhile, until people can settle down...

 Jan 21, 2016
 #4
avatar+129847 
+15
Best Answer

Distance traveled in one lap = 2*Pi*R  = the circumference of a circle

 

So.....3 times this =   3* [2*Pi *R]  =  6*Pi*R

 

Does that make sense???

 

 

cool cool cool

CPhill Jan 21, 2016
 #5
avatar+8581 
0

Oh! Now that you broke it down and everything, it makes a little more sense :)

Thank you, And thank you Lance.

 Jan 21, 2016

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