Equilateral triangle abc has a perimeter of 96 millimeters. a perpendicular bisector is drawn from angle a to side line segment b c at point m.
what is the length of line segment m c?

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Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

Mrs. gehrke said cheddar weighs 16.8 pounds. he actually weighs 15.2 pounds. what is the percent error?