The radius of a circular clock is 10.5 inches. Which measurement is closest to the circumference of the clock in inches?
33 in.
132 in.
66 in.
346 in.
...
66 in.
why
The circumference of a circle is calculated using the formula C = 2πr, where r is the radius of the circle.
In this case, the radius is 10.5 inches.
C = 2 * π * 10.5
C ≈ 2 * 3.14 * 10.5
C ≈ 66 inches
Therefore, the closest measurement to the circumference of the clock in inches is 66 inches.