The base of a triangular field is 840m and its altitude is 550m . Find the cost of reaping the field at the rate of Rs 2500 per Hectare.
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Answer: cost= 57750
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area of triangle =1/2×b×h
a=1/2×550m×840m
=231000m^2
convert m^2 into hectare
231000/10000
23.1h
cost of reaping=23.1×2500=₹57750
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