What is the radius of the Brazilian coin that has a circumference of 84.78 mm? Explain your work. Use 3.14 pi

2 answers:

3 0

Hey there!

Sorry If this answer is late, but here ya go.

To find the radius of this Brazilian coin, first multiply 3.14 by 2. This will give you and answer of 6.28. Then, divide 84.78 mm by this, and you will get your radius of 13.5.

Have a good day! And stay CRAZZZY! :D

Nitella [24]3 years ago

3 0

Answer:

The formula for circumference is C = πd or C = 2πr. In this case, we want the radius, so we can use the formula that has the radius in it. Since C = 84.78, substitute to get 84.78 = 2πr. Divide both sides of the equation by 2π, which is equal to 6.28. The radius is 13.5 mm.

Step-by-step explanation:

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