Calculate volume from given circumference and length

[jerryg72]

Someone please help me to create a formula to calculate the volume in cubic feet from the given circumference and length (in feet). This is find the volume of lumber. Thank you all in advance.

 

[DeBeuz]

Isn't it C*C*L/(4*Pi) ?

 

[FormR]

Like this maybe:

Excel Workbook
	A	B	C
1	circumference	length	volume
2	44	12	1848.743819
Sheet1

 

[jerryg72]

FormR, I think that's what I was looking for. Great! Thank you so much.