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Mathematics 8 Online
bemine11:

What is the radius of a circle that has an approximate circumference of 81.64 meters? (Use 3.14 for ). r = m

AZ:

You need to know the formula for circumference Circumference = 2 * pi * r

bemine11:

i just need help putting the number in the place

AZ:

So they said the circumference is 81.64 and they're telling you to use 3.14 for pi or π so 81.64 = 2 * 3.14 * r can you solve for r?

bemine11:

yea it would be 13

AZ:

That's correct

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