Question

What is approximate circumference of circle with diameter of 42 in lowest terms

Answer 1

Answer: Circumference is 132 inches.

Step by step explanation:

The circumference of a circle can be calculated with the formula:

`\begin{gathered} C=2\pi r \\ C=\text{circumference} \\ r=\text{radius} \end{gathered}`

The diameter is twice the radius, diameter = 2*r

`\begin{gathered} r=(diameter)/(2) \\ r=(42)/(2)=21in \end{gathered}`

Then the circumference is:

`\begin{gathered} C=2*\pi*21 \\ C=131.95in \end{gathered}`