Part 1
r=9.5 mm
The area is given by the formula
[tex]\begin{gathered} A=pi*r^2 \\ A=pi*9.5^2 \\ A=90.25pi\text{ mm}^2 \end{gathered}[/tex]
The circumference is given by the formula
[tex]\begin{gathered} C=2*pi*r \\ C=2*pi*9.5 \\ C=19pi\text{ mm} \end{gathered}[/tex]
Part 2
r=2.7 cm
Find out the area
[tex]\begin{gathered} A=pi*2.7^2 \\ A=7.29pi\text{ cm}^2 \end{gathered}[/tex]
Find out the circumference
[tex]\begin{gathered} C=2*pi*2.7 \\ C=5.4pi\text{ cm} \end{gathered}[/tex]
Part 3
r=7.3 in
Area
[tex]\begin{gathered} A=pi*7.3^2 \\ A=53.29pi\text{ in}^2 \end{gathered}[/tex]
Circumference
[tex]\begin{gathered} C=2*pi*7.3 \\ C=14.6pi\text{ in} \end{gathered}[/tex]
