Question

find the circumference of the circle below. use your calculators version of pi. round your answer to the nearest tenth.

Explanation:

Step1: Find circle's diameter

The circle spans from $x=-1$ to $x=7$ on the x-axis.
$d = 7 - (-1) = 8$

Step2: Calculate circumference

Use formula $C=\pi d$.
$C = \pi \times 8$

Step3: Round to nearest tenth

Use calculator $\pi$, compute and round.
$C \approx 25.1$

Answer:

25.1