Verified Answer :

For a circle, A=\(\pi\) \(r^{2}\)
For this circle the radius is 18mm so when we plug it in we get A=\(\pi (18)^{2}\)
\(18^{2} = 324\) so now we have A=324\(\pi\)
Using 3.14 as \(\pi\) We now have A=(3.14)(324) which is equal to 1017.36
So we know that A=1017.36 \(mm^{2}\)

apologiabiology

area=pi times r^2

radius=18mm
pemdas
exponents first
18^2=324
pi aprox=3.14
324 times 3.14=1017.36 mm^2 or square mm

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