Sheela wants to buy a trapezium shaped field. Its side along the river is parallel to and twice the side along the road. If the area of this field is 10500m² and the perpendicular distance between the two parallel sides is 100m , find the length of the side along the river.

The correct answer is: 140 m

Ans :-  140 m
Explanation :-  Given the shape of the field is trapezium . The side along the river is
parallel to twice the side along the road .
Let the length of side along road  be x then length of side along river = 2x
Then lengths of parallel sides be x and 2 x ; height = 100 m (given)
Area of trapezium field =10,500 m².



The length of side along river = 2x = 2 × 70 = 140 m
Therefore, the length of the side along the river is 140 m.