 Welcome to the session. Today we will discuss the following question. The question says Mohan wants to buy a trapezium shaped field. Its site along the river is parallel to and twice the site along the road. If the area of this field is 10,500 meters square and the perpendicular distance between the two parallel sites is 100 meter, find the length of the site along the river. Here is the given figure and this is the trapezium shaped field. Let us name it as A B C D. Now the question says its site along the river is parallel to and twice the site along the road. Now the site along the river is B C and the site along the road is A D. So that means B C is parallel to A D and B C is twice of A D. So let us start its solution B C equal to twice of A D. So we will assume A D equal to x meters, let us assume A D equal to x meters. So this implies B C is equal to 2 times A D and A D is x. So B C will be 2 times x meters that is 2 x meters. So the area of the field is 10,000 500 meters square and the perpendicular distance between the two parallel sites is 1 meter. That means the height of the trapezium is 100 meters and the site is equal to 100 meters. Trapezium is given a 150 river that is B C's question. With this we finish this session. Hope you must have understood the question.