Answer:
Option 3rd is correct
12π inches
Explanation:
The arc length of thew circle is given by:
....[1]
where,
r is the radius of the circle
is the central angle in radian
As per the statement:
a central angle of (Pie/2) radians in a circle whose radius is 24 inches.
⇒
and r = 24 inches
Substitute the given values in [1] we have;

⇒
inches
Therefore, the arc length of a circle is, 12π inches