Math
posted by Mary .
Which of the following formulas could be used to calculate the combined area,x of threw identical circles?
A. X= 3pie r squared
B. X= 6 pie r
C. X= pie r squared/ 3
D. X= 6 r/ pie

Do you mean pi (not pie)?
Do you mean three (not threw)? 
Yes, sorry about that.

The formula for the area of a circle is
A = pi * r^2
Which of your choices shows the formula for the areas of three identical circles?
I'll be glad to check your answer. 
A= 3pi r squared?

Right! :)

mrs, smith baked 4 pies.she cut each pie in to 8 equal pieces. if 5 of pie were eaten,what fraction of the pies is left?