10. MENSURATION
7. Find the expense of fencing a square plot of side 20 m 50 cm at the rate ₹8 per meter.
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side of plot= 20 m 50cm
= 20.5m
Perimeter of plot= 4* side
= 4*20.5
= 82m
Rate of fencing= ₹8 per m
Cost of fencing= perimeter* rate
= 82*8
= ₹656
the expense of fencing a square plot of side 20 m 50 cm at the rate ₹8 per meter is ₹656
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