Exercise condition:

2
In a triangular ground, the adjacent side is \(90°\) base and height are 4 \(m\), and 169 \(m\), find the area and the cost of fencing the triangular ground at \(₹\)22 per \(m²\).
 
The area of a triangular ground is  \(m²\).
 
The total cost of fencing is \(₹\).
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