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| The lily rises 10" above the pond, but when the wind blows, or when the kid hits it with his oar, the flower swings down and disappears beneath the surface 21" away. How deep is the pond? |
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| 10 |
14.5 |
12.05 |
17.05 |
23.25 |
27.05 |
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| Hint: Think of the lily as the radius of a circle, and the pond bottom as the diameter. |
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The Answer
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