Question

Circle O has a circumference of 88π cm.

Circle O has a radius length of r.

What is the length of the radius of the circle?

Answer 1

r = 44 cm

Explanation:

The question has given us the circumference of circle O (88π cm) and asks us to calculate its radius (r).

To do this, we have to use the formula for the circumference of a circle:

`\boxed{\mathrm{C = 2\pi r}}`,

where:

C ⇒ circumference of the circle

r ⇒ radius of the circle.

In order to calculate the radius from this formula, we have to substitute the value given for C into the equation, and then solve for r:

`88 \pi = 2\pi * r`

⇒
`r = (88 \pi)/(2 \pi)` [Dividing both sides of the equation by 2π]

⇒
`r = \bf 44 \ cm`

Therefore, the length of the radius of the circle is 44 cm.