An isosceles trapezium has non-parallel sides of length 20 cm and the shorter parallel side is 30
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An isosceles trapezium has non-parallel sides of length 20 cm and the shorter parallel side is 30 cm, as illustrated in Figure 1.8. The perpendicular distance between the parallel sides is h cm. Show that the area of the trapezium is h(30 + √(400 – h2))cm2.
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Figure 1.8 30 cm h cm 20 cm
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