Question

question
the radius of a circle is 3.1 ft. find the circumference to the nearest whole number.

Explanation:

Step1: Recall circumference formula

The formula for the circumference \( C \) of a circle is \( C = 2\pi r \), where \( r \) is the radius.

Step2: Substitute the radius value

Given \( r = 3.1 \) ft, substitute into the formula: \( C = 2\times\pi\times3.1 \).

Step3: Calculate the value

Using \( \pi \approx 3.14 \), we have \( C \approx 2\times3.14\times3.1 = 19.468 \) ft.

Step4: Round to nearest whole number

Rounding \( 19.468 \) to the nearest whole number gives \( 19 \).

Answer:

19