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You decide to determine the depth of a tank of water using the sun's light. With the sun overhead, the tank's bottom is lit, but as the sun sets the bottom begins to be shaded. The tank is 3 feet across and the base is shaded when the sun above the horizon. How deep is the tank?

a.) 0.19 feet

b.) 4.5 feet

c.) 3.3 feet

d.) 5.2 feet

e.) 0.22 feet

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