Question

A garden wants it fence a circular sheet of diameter 21 metre find the length of the rope he needs to masu round of difference also find the cost of the rope,if it cost rupees per metre(π=22/7)​

Answer 1

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Answer 2

Answer:

Correct question

A gardener wants to fence a circular garden of diameter 21 m. find the length of 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 .

$\fbox \pink{diameter} = 21m \\ \\ \fbox \purple{radius} = \frac{21}{2}m \\ \\ \fbox \red{circumference} = 2\pi \: r \\ \\ 2 \times \frac{22}{7} \times \frac{21}{2} = \frac{22}{7} \times 21 \\ \\ 22 \times 3 = 66m \\ \\ \fbox \green{length \: of \: rope \: required} = 2 \times 66 = 132m \\ \\ \fbox \blue{cost} = 1m \: rope = 4 \\ \\ 132m \: rope = 4 \times 132 = 528$