the radius of a circle is 7n-21 inches. find the circunference of the circle in terms of N. Use 22/7 as an approximation for pi

C = pi*2r = (22/7) * 2(7n-21)

C = (44/7) * (7n-21) = (308n - 924)/7 =
44n - 132

44n-132

To find the circumference of a circle, we need to use the formula:

Circumference = 2πr

where π is approximately equal to 22/7, and r is the radius of the circle.

In this case, the radius of the circle is given as 7n-21 inches. So we substitute this value into the formula:

Circumference = 2(22/7)(7n-21)

Now we simplify the expression:

Circumference = (44/7)(7n-21)

Circumference = 44n - 44(3)

Simplifying further:

Circumference = 44n - 132

Therefore, the circumference of the circle in terms of n is 44n - 132 inches.