ShmoopTube

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Here’s your shmoop du jour, brought to you by the wheel.

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The second best invention of all time, after that “upright sleeper” we bought from SkyMall.

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A wheel with a diameter of 12 inches makes four rotations.

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How far does a point on the outside of the circle travel?

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Use 3.14 for pi and round to the nearest whole number, measured in inches.

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Hopefully our destination isn’t too remote, because with our wheel only making

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4 rotations, it doesn’t appear we’re going very far.

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So… our wheel…we’ll call it a circle for practical purposes…

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…has a diameter of 12 inches.

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We know the circumference of a circle is diameter times pi, and we’re told to just round pi

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down to two decimal places…

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…so…we get 12 times 3.14 comes out to 37.68 inches.

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But that’s just the distance around the edge of the wheel for ONE rotation.

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We’re spinnin’ this bad boy around FOUR times…

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...so 37.68 times 4 is 150.72 inches…

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…now we round to the nearest whole number, and we come out with 151 inches

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Sheesh, that was a lot of effort just to move forward a few yards.

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