Question

4. 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 rupees 4 per meter. (Take π = 22/7)​

Answer 1

Answer:

Diameter of the circular garden=21m

∴ Radius of the circular garden=

2

21

m

Now, circumference of circular garden=2πr=2×

7

22

×

2

21

=22×3=66m

The gardener makes 2 rounds of fence so the total length of the rope of fencing =2×2πr=2×66=132m

Since the cost of 1 meter rope=Rs. 4

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

Step-by-step explanation:

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Answer 2

Step-by-step explanation:

this this is the full answer.