mint "Ac-ac 11. The parallel sides of a trapezium are 20 cm and 10 cm. Its nonparallel sides are both equal. each being 13 em. Find the area of the trapezium.
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Answer:
area = (20+10) × 1/2 ×13
= 30× 1/2 ×13
= 15 × 13
=195 cm sq.
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