Michelle
Dec 25, 2020

answers: 1

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Answer:

23cm

Area of trapezium= 180cm²

height= 9cm

parallel sides= x cm and x+6 cm.

According to question, we have to find length of longer side

Area of trapezium= 1/2x height(sum of parallel sides)

= 180cm² = 1/2x9(x+x+6)

= 180x2= 9(2x+6)

=360= 18x+54

=360-54= 18x

= 306= 18x

x= 17cm

and x+6= 23cm

Hence the longer side is 23cm.

498

fleet

Dec 25, 2020

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