# Geometry

Wilbur Wrong is flying his remote-control plane inn a circle with the radius 28 meters. He is holding the wire so that it is level with the ground. His brother, Orville Wrong, clocks
the plane at 16 seconds per revolution. What is the speed of their plane? Express your

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1. C = pi*D = 3.14(2*28 = 175.8m = circumference.

V = d/t = 175.8m / 16s = 11m/s.

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posted by Henry
2. 553m/sec

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