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 $= ₹$