An isosceles trapezium has its area 247.5 cm2. The height of the trapezium is 5/11th of the sum of its parallel sides. If the ratio of length of parallel sides is 3 : 8. Calculate the length of diagonal?

An isosceles trapezium has its area 247.5 cm². The height of the trapezium is 5/11^th of the sum of its parallel sides. If the ratio of length of parallel sides is 3 : 8. Calculate the length of diagonal?
1). 22.29 cm
2). 21.78 cm
3). 27.65 cm
4). 26.89 cm

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