Question

what is the circumference of the circle in feet? use the formula ( c = pi d ) where ( c ) is the circumference of a circle and ( d ) is the diameter. a circle with radius 6 ft is shown. the options are ( 3pi ), ( 6pi ), ( 12pi ), and ( 36pi ).

Explanation:

Step1: Find the diameter

The radius \( r = 6 \) ft. The diameter \( d = 2r \), so \( d = 2\times6 = 12 \) ft.

Step2: Calculate the circumference

Using the formula \( C=\pi d \), substitute \( d = 12 \). So \( C=\pi\times12 = 12\pi \) ft.

Answer:

\( 12\pi \) (corresponding to the option "12π")