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Sagot :
Answer: 254,34 mm².
Step-by-step explanation:
[tex]S{circle}=\pi R^2\\S{circle}=3,14*9^2\\S{circle}=3,14*81\\S{circle}=254,34\ mm^2.[/tex]
Hi :)
Let's first find the area of this circle
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For finding the area of a circle we use
[tex]\longrightarrow\sf{A_{\circ}=\pi r^2}[/tex], where only r (radius) is squared
[tex]\textit{We know that :}\begin{cases} \sf{Radius = 9 mm} \\ \sf{\pi =3.14} \end{cases}}[/tex]
Thus
[tex]\longrightarrow\sf{A_{\circ}=3.14\cdot9^2}[/tex]
[tex]\longrightarrow\sf{A_{\circ}=3.14\times81}[/tex]
[tex]\longrightarrow\sf{\underline{A_{\circ}=254.34\: mm}}[/tex]
[tex]\tt{Learn\:More;Work\;Harder}[/tex]
:)
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