Q. 4. A gardener wants to fence a circular garden of diameter . Find the length of the rope he needs to purchase if he makes rounds of fence. Also find the cost of the rope, if it costs (Take ).
It is given that diameter of a circular garden is .
We know that
Circumference of circle is
Now, length of the rope requires to makes rounds of fence is
circumference of circle
Now, cost of rope at is
Therefore, length of the rope requires to makes rounds of fence is 132 m and cost of rope at is Rs 528
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