11. Four mark exercise problems III

A window is in the form of trapezium whose parallel sides are \(105 \ cm\) and \(50 \ cm\) respectively and the distance between the parallel sides is \(60 \ cm\). Find the cost of the glass used to cover the window at the rate of \(₹15\) per \(100 \ sq. \ cm\).

 

Answer:

 

Area of the window \(=\)  \(sq. \ cm\)

 

The cost of the glass used to cover the window \(=₹\)