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The length of the parallel sides of a trapezium are 5cm and 7cm. If its...

Mathematics
WAEC 2000

The length of the parallel sides of a trapezium are 5cm and 7cm. If its area is 120cm\(^2\), find the perpendicular distance between the parallel sides

  • A. 5.0cm
  • B. 6.9cm
  • C. 10.0cm
  • D. 20.0cm
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Correct Answer: Option D
Explanation

Area of trapezium = \(\frac{1}{2} (a + b)h\)

\(120 = \frac{1}{2} (5 + 7) \times h\)

\(120 = 6h\)

\(h = 20 cm\)


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