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.