SOLUTION: A twelve inch pizza is cut into eight congruent pieces. What is the length of outer crust on each piece of pizza?

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Question 743651: A twelve inch pizza is cut into eight congruent pieces. What is the length of outer crust on each piece of pizza?
Found 2 solutions by tommyt3rd, josmiceli:
Answer by tommyt3rd(5050) About Me  (Show Source):
You can put this solution on YOUR website!
A twelve inch pizza means:
r=d%2F2=12%2F2=6

is cut into eight congruent pieces means:
theta+=+%282%2Api%29%2F8=pi%2F4
arclength+=+r%2Atheta=6%2A%28pi%2F4%29=4.71
outer crust is 4.71inches

Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
8 equal pieces divides the circumference
( outer crust ) into 8 equal parts
-------------
The circumference is:
+C+=+pi%2Ad+ where +d+ = diameter
given: +d+=+12+ in
+C+=+pi%2A12+ in
+C+=+37.699+ in
+C%2F8+=+37.699%2F8+
+C%2F8+=+4.7124+
The length of outer crust on each piece of pizza
is about 4.7 inches