They were evenly matched that the game lasted 11 innings! The stingrays had 3 pitchers, and each of them pitched for three same number of innings. How long did each of the pitchers for the stingrays pitch?

21/58.

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answer: 1 + 1 = 11

step-by-step explanation:

arc length = radius * x ( in radians)

6 * pi = 18 * x

divide by 18 on each side

6 pi / 18 = x

pi/3 = x

the angle is pi / 3 radians

or   60 degrees