Tutor.com Geometry Session

May. 2, 2012

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Session Transcript - Math - Middle Grades, 4/30/2012 6:20PM - Tutor.comSession Date: 4/30/2012 6:20PM
Length: 10.2 minute(s)
Subject: Math - Middle Grades

System Message
[00:00:00] *** Please note: All sessions are recorded for quality control. ***

Sam (Customer)
[00:00:00] I am finding perimeters and ares on shapes. I have to find the circumference of a circle and im stuck.

Jordan N (Tutor)
[00:00:04] Welcome to Tutor.com !
[00:00:08] Feel free to type out your math problem or draw it out on the Whiteboard.

Sam (Customer)
[00:00:51] I am having trouble finding the circumference of a circle, what should i do?

Jordan N (Tutor)
[00:01:32] The formula for circumference is C = 2*pi*r

Sam (Customer)
[00:02:26] Yeah, to be honest i have no idea what you just said.

Jordan N (Tutor)
[00:02:39] circumference = 2 times pi times the radius
[00:02:43] pi is estimated at 3.14
[00:02:54] so it would be circumference = 2 times 3.14 times radius

Sam (Customer)
[00:03:29] So if the inside of the circle to the edge is 8.8 m then it would be 8.8 m times 3.14?

Jordan N (Tutor)
[00:03:42] Can you draw it on the whiteboard?

Sam (Customer)
[00:04:51] Im terrible at circles

Jordan N (Tutor)
[00:05:00] that's ok
[00:05:05] so the radius is 8.8, correct?

Sam (Customer)
[00:06:16] Yes, 8.8

Jordan N (Tutor)
[00:06:22] great!
[00:06:31] so if we plug that into our formula, we get...
[00:06:35] circumference = 2 times 3.14 times 8.8

Sam (Customer)
[00:07:09] 55.264?

Jordan N (Tutor)
[00:07:24] You got it!
[00:07:28] Do you understand everything?

Sam (Customer)
[00:08:41] Yeah,I think I do. so i times 2 by 3.14 then that times my radius?

Jordan N (Tutor)
[00:08:56] yep
[00:09:00] Do you have any other questions?

Sam (Customer)
[00:09:13] Thank you, no i think im all set

Jordan N (Tutor)
[00:09:25] great
[00:09:28] Thanks for using Tutor.com ! Please fill out the post-session survey. I would really appreciate it!
[00:09:35] Please sign back in if you have additional questions that you need help with. Have a nice night!

Sam (Customer)
[00:09:45] Yout too