Question

The radius of a circle is 4.5 cm. Find the circumference
to the nearest tenth

Answer 1

28.3 cm

Explanation:

You want the circumference of a circle with radius 4.5 cm.

Circumference

The circumference of a circle is given by ...

C = 2πr

For the given circle, the circumference is ...

C = 2π(4.5 cm) = 9π cm ≈ 28.3 cm

The circumference is about 28.3 cm.

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