An observer is at table level, a distance d to the left of a flower of height h. The flower itself is a distance d to the left of a mirror. Note that a ray of light propagating from the top of the flower to the observer's eye reflects from the mirror at a height y above the table. If the height y is equal to 20 cm, calculate the height h of the flower.

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An observer is at table level, a distance d to the left of a flower of height h. The flower itself is a distance to the left of a mirror. Note that a ray of light propagating from the top of the flower to the observer's eye reflects from the mirror at a height y above the table. If the height is equal to 20 cm, calculate the height h of the flower. 

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