Question

Estimate the radius of the object. Round to the nearest hundredth if necessary.

A circular sewer cover with circumference labeled 122 inches.

Answer 1

The radius is 19.42 inches.

Explanation:

Start with the formula for finding the circumference of a circle, which is C=2
`\pi`r.

Then, derive the formula in order to find the radius, which the formula should then look like r= C/2
`\pi`.

Finally, plug in the corresponding numbers, which is r= 122 inches/ 2
`\pi`. The final answer is 19.42 inches.