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Area and Circumference of Circles (A)Calculate the area and circumference of each circle.r=9.5 mmr=2.7 cmcircumferencearea =circumferencearea =

Area and Circumference of Circles (A)Calculate the area and circumference of each-example-1
User Anukool
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1 Answer

16 votes
16 votes

Part 1

r=9.5 mm

The area is given by the formula


\begin{gathered} A=pi*r^2 \\ A=pi*9.5^2 \\ A=90.25pi\text{ mm}^2 \end{gathered}

The circumference is given by the formula


\begin{gathered} C=2*pi*r \\ C=2*pi*9.5 \\ C=19pi\text{ mm} \end{gathered}

Part 2

r=2.7 cm

Find out the area


\begin{gathered} A=pi*2.7^2 \\ A=7.29pi\text{ cm}^2 \end{gathered}

Find out the circumference


\begin{gathered} C=2*pi*2.7 \\ C=5.4pi\text{ cm} \end{gathered}

Part 3

r=7.3 in

Area


\begin{gathered} A=pi*7.3^2 \\ A=53.29pi\text{ in}^2 \end{gathered}

Circumference


\begin{gathered} C=2*pi*7.3 \\ C=14.6pi\text{ in} \end{gathered}

User Moonpatrol
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