need help!!!!

[lilmissbeautyqueen]

what is pi*4²+2*pi*4*9
i don't know how to do this equation that much but if i had the right calculator i could probably get through with it. I tried using the computer calculator but it didn't work out to well cause it was really confusing. Can you please help me? :???:

 

[pka]

what is pi*4²+2*pi*4*9
i don't know how to do this equation that much but if i had the right calculator i could probably get through with it. I tried using the computer calculator but it didn't work out to well cause it was really confusing. Can you please help me?

First that is not an equation!
Next you did not say what was to be done with the expression.

You wrote \(\displaystyle \pi\cdot 4^2+2\cdot\pi\cdot4\cdot 9.\)
Is that really what you meant?
If so, tell us what is to be done with it.