8.
A circular field of diameter 210 m has a circular path of uniform width of 5 m
along and inside its boundary.
Find :
(a)
area of the path.
(b) cost of constructing it at the rate of 3 42 per mitre
square
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perimeter of circle = 2pie r=2×22/7×5=10×22/7=220/7 write in decimal you only
then multiply the decimal answer with 3.42
thanku
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