# Math

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A truck tire with a diameter of 36 in is rolling over level ground spinning at 11 rotations/second. If the speed limit is 55 miles per hour and the penalty is \$20 per hour over the speed limit, should the driver be fined and if so, how much?

• Math -

36 * pi in/rev * 11 rev/sec * 1mi/(5280*12)in * 3600s/hr = 71mph

so, the fine is \$20*16 = \$320

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