Question

what is the circumfrence with a radius of .25 inches

Answer 1

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Answer 2

circumfrence is
\[2 \pi r\] so simply input .25 as r and solve this equation :)

Answer 3

formula for circumference is
\[C =2\pi r\]
r=0.25
\[C=0.5\pi \approx 1.57~inches\]