Question

find the circumference. 8 cm

Explanation:

Step1: Identify the radius

The radius \( r \) of the circle is given as \( 8 \, \text{cm} \).

Step2: Recall the formula for circumference

The formula for the circumference \( C \) of a circle is \( C = 2\pi r \) (or \( C = \pi d \), where \( d \) is the diameter; here, \( d = 2r = 16 \, \text{cm} \), but we'll use \( 2\pi r \)).

Step3: Substitute the radius into the formula

Substitute \( r = 8 \, \text{cm} \) into \( C = 2\pi r \):
\( C = 2 \times \pi \times 8 \)
\( C = 16\pi \)

Step4: Calculate the numerical value (using \( \pi \approx 3.14 \))

\( C \approx 16 \times 3.14 = 50.24 \, \text{cm} \)

Answer:

The circumference of the circle is \( 16\pi \, \text{cm} \) (or approximately \( 50.24 \, \text{cm} \)).