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Goggles from the edge of the pool

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It's nighttime, and you've dropped your goggles into a swimming pool that is 4.5 m deep. If you hold a laser pointer 1.4 m directly above the edge of the pool, you can illuminate the goggles if the laser beam enters the water 2.8 m from the edge. How far are the goggles from the edge of the pool?

Reference no: EM131058927

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