Question 944945


A . Find the EXACT circumference for a circle that has a
radius of {{{r=4.5cm}}}.

{{{C=2pi*r}}} 

{{{C=2pi*4.5cm}}}

{{{C=9pi*cm}}}the EXACT circumference

B. Find the EXACT area for a circle that has a
radius of {{{r=4.5cm}}}

{{{A=r^2*pi}}}

{{{A=(4.5cm)^2*pi}}}

{{{A=20.25*pi*cm^2}}}