Hill and Dale were out in their rowboat one day, and Hill spied a water lily. Knowing that Dale liked a mathematical challenge, Hill demonstrated how it was possible to use the plant (which was rooted to the bottom of the pond) to calculate the depth of the water under the boat. Without uprooting it, Hill gently pulled the plant sideways, causing it to disappear at a point that was 35 inches from its original position. The top of the plant originally stood 5 inches above the water surface. Use this information to calculate the depth of the water. Need to use Pythgorean theorem

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A: Let's find.