Question

A gardener wants to fence a circular garden of diameter 21m. Find the length of the rope he needs to purchase, if he makes 2 rounds of fence. Also find the cost of the rope, if it costs ₹4 per meter. (Take π = 22/7)

Answer 1

Answer:

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Answer 2

Answer:

528 Rs.

Step-by-step explanation:

In the question,

Diameter of the circular garden = 21m

So,

Radius of the circular garden = 21/2 m

Number of rounds of the fence = 2 rounds

Cost of the rope / meter = 4 Rs.

Now,

1 round of fence = Circumference of the circular garden = 2πr

Circumference = 2×(22/7)×(21/2) = 66

So,

Length of the rope = 2 rounds = 2×66 = 132 m.

Therefore, the cost of the rope = 132×4 = 528 Rs.