1.

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.

Answer»

Length of the two parallel sides of a trapezium are 8.5 cm and 11.5 cm and its height is 4.2 cm. Area of a trapezium

\(\cfrac{1}{2}\)x sum of lengths of parallel sides x height

\(\cfrac{1}{2}\)x (8.5 + 11.5) x 4.2

\(\cfrac{1}{2}\) x 20 x 4.2

= 10 x 4.2 

= 42 sq. cm 

∴ The area of the trapezium is 42 sq. cm.



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