How much distance will be coverd by paheli in travelling one round around the semi circle of radius 3.8cm.
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The radius of a semi-circular garden is 35 m.
The distance to make a trip around its boundary
=ACB+AB
=πr+2r
=722(35)+2(35)
=22(5)+70
=110+70=180 m
Therefore one has to walk 180 m to make a trip along its boundary.
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