PreCalculus - 6.1.1

[logistic_guy]

\(\displaystyle \textcolor{indigo}{\bold{Solve.}}\)

What is the formula for the circumference \(\displaystyle C\) of a circle of radius \(\displaystyle r\)? What is the formula for the area \(\displaystyle A\) of a circle of radius \(\displaystyle r\)?

 

[mathdad]

\(\displaystyle \textcolor{indigo}{\bold{Solve.}}\)

What is the formula for the circumference \(\displaystyle C\) of a circle of radius \(\displaystyle r\)? What is the formula for the area \(\displaystyle A\) of a circle of radius \(\displaystyle r\)?

1. C = 2(pi)r

2. A = pi(r^2)