12. Four mark exercise problems IV

A man has to build a rhombus shaped swimming pool. One of the diagonal is \(13 \ m\) and the other is twice the first one. Then find the area of the swimming pool and also find the cost of cementing the floor at the rate of \(₹15\) per \(sq. \ cm\).

 

Answer:

 

The length of the other diagonal \(=\)  \(cm\)

 

Area of the swimming pool \(=\)  \(sq. \ cm\)

 

Cost of cementing the floor \(= ₹\)