The area of a trapezium is 180 cm and its
height is 9 cm. If one of the parallel sides is
longer than the other by 6 cm, find the two
parallel sides.
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Answer:
height of trapezium =9 cm
one of other side of trapezium is longer than 6 cm
one is 6cm and other is x+6
Area of trapezium =
1÷2 (sum of parallel sides )×height
1÷2 ( x + x+6) ×9 =180
1÷2 (2x+6)×9= 180
x+3×9=180
x+3=180÷9
x+3=20
x=20-3
x=17
one side is x = 17 cm
other side x+6 =17+6=23cm
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