the area of a projected picture on a movie screen varies directly as the square of the distance from the projector to the screen
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Answer:
4π
Step-by-step explanation:
-A circle subtends a total angle of 360 ° from its center.
-The length of an arc is directly proportional to the angle it subtends from the circle's center.
#The arc's length can therefore be calculated as:
Hence, the length of the arc is 4π