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Subjects
Mathematics State Board
Class 9
Mensuration
Heron's formula
3.
Five marks example problems I
Exercise condition:
5
m.
The lengths of sides of a triangular field are \(28 \ m\), \(15 \ m\) and \(41 \ m\). Calculate the area of the field. Find the cost of levelling the field at the rate of \(₹ \ 20\) per \(m^2\).
The cost of levelling the field \(=\) \(₹\)
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