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We don't know what the "width" of a circle is.

The diameter of a circle is all the information you need to calculate the area.

-- Take 1/2 of the diameter. Call is "R"". (That's called the circle's "radius".)

-- Area of the circle is: (pi) x (R2) .

"pi" is a number that can never be written down exactly. If you need to calculate

an area, you can use 3.14 for 'pi', or you can use 22/7 . They're both very close.

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Q: How do you find area of circle when width and diameter given?
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