Multiple Choice Question (MCQ)

What is the area of a circle with a diameter of 16?

  1. ×

    8\pi

  2. ×

    16\pi

  3. 64\pi

  4. ×

    128\pi

  5. ×

    256\pi

Collected in the board: Circles problems

Steven Zheng posted 2 years ago

Answer

  1. The formula for the area of a circle is

    \pi r^2

    r=\dfrac{d}{2}=\dfrac{16}{2} =8

    So the area of the circle is

    \pi r^2

    = \pi 8^2

    =64\pi

Steven Zheng posted 2 years ago

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