Question

5.The area of a trapezium is 90 sq cm and the length of one of the parallel sides is 20 cm and its height is 8 cm. Find the length of the other parallel side.​

Answer 1

Step-by-step explanation:

Let the length of the smaller parallel side be xcm

Then length of the other parallel side be =2xcm

Area of trapezium=

2

1

×Sum of parallel sides×height

⇒90=

2

1

×(x+2x)×6

⇒90=3x×3

⇒90=9x

⇒x=

9

90

=10

∴x=10cm

Answer 2

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