Question

A circle has a diameter of 6, an area of b square units, and a circumference of c units what is the value of b+ c
The answer the book has is 15 pie

Answer 1

\[r=d/2=6/2=3\]
\[areaofacircle=\pi*r^2\]
\[b=\pi*(3)^2\]
\[b=9\pi\]
\[circumferenceofacircle=2*\pi*r\]
\[c=2*\pi*3\]
\[c=6\pi\]
\[b+c=9\pi+6\pi=15\pi\]

Answer 2

Ok got it thx