Circle diameters

One circular table has a diameter of 8 ft, and another circular table has a diameter of 12 ft.  How much greater is the area of larger table?
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4 Answers

2 round tabels, radiuses=8 & 12

area1=pi*8*8=64 pi

area2=pi*12*12=144pi

dif=80pi

difer=80pi/64pi=80/64=1.25

difer=125% bigger
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