The area of a trapezium is 1620 cm. its parallel sides are in the ratio 4 : 5 and the distance between
them is 36 cm. Find the length of each of the parallel sides.
each being 6.5 cm
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Answer:
Let, the parallel sides be 4x,5x respectively
Height =18 cm
The area of trapezium =405 cm
2
⟹
2
1
h(a+b)=405
⟹
2
1
×18×(4x+5x)=405
⟹9×9x=405
⟹81x=405
∴x=
81
405
=5
The length of each of the parallel sides are 20 cm,25 cm respectively
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