Length of the two parallel sides of a trapezium are 8.5 cm and 11.5 cm respectively and its height is 4.2 cm, find its area.
Area of trapezium = `1/2` (sum of parallel sides) x height
= `1/2` x (8.5 + 11.5) x 4.2
= `1/2` x 20 x 4.2
= 42 cm²
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Solution Length of the Two Parallel Sides of a Trapezium Are 8.5 Cm and 11.5 Cm Respectively and Its Height is 4.2 Cm, Find Its Area. Concept: Area of a Trapezium.