I don't understand how to do it

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asked Jan 16, 2018 43.5k views

1 Answer

Rob Mensching · Answer 1 · 2018-01-21T21:22:19+0000

The formulas:
Circumference= 2(3.14)r
Area= (3.14)r^2
r= radius (half of the diameter)
So, the first one would be C= 2(3.14)(3.5)=21.98
A= (3.14)(3.5)^2 =38.47

I don't understand how to do it

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