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Find the circumferences of both circles to the nearest tenth.

Two circles lying one inside the other. The inner circle is shaded orange and the outer circle is shaded blue. The radius of the inner circle is labeled 5 centimeters. The distance between the outer and the inner circle is circle is labeled 5 centimeters.

The circumference of the blue circle is about
cm.

The circumference of the orange circle is about
cm

1 Answer

4 votes

Answer:

The circumference of the blue circle is about

62.8 cm.

The circumference of the orange circle is about

31.4 cm.

Explanation:

First the blue circle, it shows that there are 5 cm on the outside of the orange circle so the would be 5+5=10, then you add the orange circle to the 10 cm, that would give you 20 cm. Then you multiply 20 cm by pi (3.14) which will give you your answer 62.8. Do the same thing for the orange circle, 5+5=10 so 10 multiplied by pi (3.14) is 31.4

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