Question

The area of a trapezium is 300 cm2 and
the length of one of the parallel sides is
28 cm and its height is 15 cm. Find the
length of the other parallel side.​

Answer 1

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Answer 2

Answer:

If one side is a then the other side is a−16 since the difference of parallel sides is 16

∴ A =

2

1

(a+a−16)×15=300

⇒

2

1

(2a−16)×15=300

⇒(2a−16)×15=600

⇒(2a−16)=40 [By dividing both side by 15]

2a=56

a=28 m

The other parallel side=a−16

a−16=28−16=12

Therefore, the sides are 28m and 12m.