+0  
 
-1
272
3
avatar+2509 

Help.

NotSoSmart  May 16, 2017
 #1
avatar+87301 
+2

We need to find the radius

 

Circumference = 2 pi * r

 

37.68   =  2pi *r         divide both sides by 2pi

 

37.68/ (2pi)  = r

 

 

The  surface area  =  4 pi r^2......sub "r"  into this and we get

 

4pi  [ 37.68 / (2pi) ] ^2  ≈  451.9 km^2

 

 

cool cool cool

CPhill  May 16, 2017
 #2
avatar+2509 
+1

Thank you, I had figured it out just like that! :D thanks

NotSoSmart  May 16, 2017
 #3
avatar+87301 
0

OK, NSS.......good to see that you're catching on to some of this stuff......

 

cool cool cool

CPhill  May 16, 2017

15 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.