Final answer:
The radian measure of the central angle is 0.6 radians.
Step-by-step explanation:
To find the radian measure of the central angle of a circle, we use the formula:
angle = arc length / radius
Given that the radius (r) is 50 inches and the arc length (s) is 30 inches, we can substitute these values into the formula:
angle = 30 inches / 50 inches = 0.6 radians
Therefore, the radian measure of the central angle is 0.6 radians.