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syhna
a trough with triangular ends which lie in parallel planes. the top of the trough is a horizontal rectangle 50cm by 150 cm, and the depth of the trough is 40cm. a) how many liters of water will it hold? b) how many liters does it contain when the depth of the water is 25 cm? c) what is the depth of the water when the through contains 12 liters?