Question

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Answer 1

Answer: 1.99 ft

Explanation:

The formula for calculate the circumference of a circle:

`C=2r\pi`

Where r is the radius.

Based on the information given in the problem, you know that:

`C=12.56`

Substitute this value into the formula shown above and solve for the radius.

Then, this is:

`12.56=2r\pi\\r=(12.56)/(2\pi)\\r=1.99feet`

Answer 2

The radius is 2 feet.

EXPLANATION

The distance around the circular pit is 12.56 feet.

This means that, the circumference is 12.56.

We use the formula,

`C=2\pi \: r`

Substitute C=12.56 and π=3.14

`12.56 = 2(3.14)r`

Solve for r.

`r = (12.56)/(2(3.14))`

Simplify

`r = 2ft`