The diameter of a circle is 9 cm. What is the area of the circle?

Apr 24, 2018

$20.25 π\ "cm"^2$

$"Radius" = "Diameter"/2 = "9 cm"/2 = "4.5 cm"$

Area of circle $= π r^2$

$"A" = π × ("4.5 cm")^2 = 20.25pi\ "cm"^2 ≈ "63.585 cm"^2$

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