What is the diameter of a circle that has an area of 452.16 mm 2? 144 mm 12 mm 24 mm 6 mm

Question

What is the diameter of a circle that has an area of 452.16 mm 2? 144 mm 12 mm 24 mm 6 mm

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Answers ( No )

    0
    2021-09-11T06:21:12+00:00

    Answer:

    the diameter is 24

    Step-by-step explanation:

    0
    2021-09-11T06:21:40+00:00

    \bf \textit{area of a circle}\\\\ A=\pi r^2\quad  \begin{cases} r=radius\\ -----\\ A=452.16 \end{cases}\implies 452.16=\pi r^2 \\\\\\ \cfrac{452.16}{\pi }=r^2\implies \sqrt{\cfrac{452.16}{\pi }}=r\implies 11.99695787\approx r

    now, that’s the radius of the circle, recall that the diameter is twice the radius.

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