a gardener wants to fence a circular garden of diameter 28 cm . find the length of rope he needs to purchase if he makes 4 rounds of fence also find the cost of the rope if it cost rs 5 per metres ( take π=22/7)
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circumference = πd
=22/7 x 28 cm
=88cm
length of wire on 4 rounds= 4 x 88 cm
= 352 cm
= 352/100 m
=3.52 m
cost of rope=Rs 5 x 3.52
=17.6
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