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Anonymous
3.14
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pi*10-8
9
pi rounded to the nearest hundredth is 3.142
pi X 25 = 25 pi ( Algebraic. However, if you approximate pi to 3.14159 Then 3.14159 x 25 = 78.53975 If you approximate pi tp 3.13 Then 3.14 x 25 = 78.5