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OpenStudy (anonymous):
Calculate the area of a circle with a radius of 2 inches and a circle with a radius of 4 inches. Leave your answers in terms of pi. When the radius doubles does the area of the circle double?
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jhonyy9 (jhonyy9):
@blueglass ATTENTION ,, 2pir " is formula for perimeter of a circle formula for area of a circle is ,, pir^2 "
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