The area of a trapezium is 340 cm². Distance between the parallel side is 8 cm. If one of the parallel sides is 15 cm, find the other parallel side.
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Answer:
340=1/2 * (15+x)*8
340=4(15+x)
340=60+4x
4x=340-60=280
x=280/4=70
other parallel side =70cm
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