Find the radius of a circle with circumference 18cm

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Nikita Skvortsov asked Feb 10, 2023

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14 votes

Find the radius of a circle with circumference 18cm

Mathematics
college

Nikita Skvortsov asked Feb 10, 2023

by Nikita Skvortsov

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11 votes

Answer:

$r$\approx$2.9$

Explanation:

The equation for circumference is:

$C=2\pi r$

We can plug 18 cm in for C:

$18=2\pi r$

Divide both sides by 2

$9=\pi r$

Divide both sides by
$\pi$

$r$\approx$2.9$

Pasine answered Feb 16, 2023

by Pasine

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