Answer :

I hope this helps you



radius=diameter/2


radius=7/2=3,5


Circumference =2pi.r


Circumference =2.3,14.3,5


Circumference =21,98
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I HOPE THIS HELPS!!!


c = 2 x 7 x 3. 14 = 43.96 A = 3.14 x 7 x 7 = 158.86  2nd one.

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