Question

The radius of a circular field is 63 metre. Find the perimeter of the field. Also find the length of wire required to fence it's with 5 rounds​​

Answer 1

Given:-

• Radius of a circular field is 63 m.

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To find:-

• The perimeter of the field.
• The length of wire required to fence it's with 5 rounds.

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Solution:-

Here,

• Radius (r) = 63 m

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Firstly,

• we have to find out the perimeter of the field.

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According to the question

★Formula used:-

Circumference of circle = 2πr

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⇛ 2πr

⇛ 2 × 22/7 × 63

⇛ 44 × 9

⇛ 396 m

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Hence,

• the perimeter of the field is 396 m.

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Now,

• finding the length of wire required to fence it's with 5 rounds.

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⇛ Perimeter of field × 5

⇛ 396 × 5

⇛ 1980 m

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Hence,

• the length of wire required to fence it's with 5 rounds is 1980 m.

Answer 2

Given :-

• There is a circular field

• The radius of given circular field = 63m

Solution ( I ) :-

Here,

In this question,

We have to find the perimeter of circular field .

As we know that,

Perimeter of Circle = 2πr

Therefore,

The value of π = 22/7

The value of r = 63 m

Now,

Put the required values in the given formula,

Perimeter of Circular field = 2 * 22/7 * 63

Perimeter of Circular field = 2 * 22 * 9

Perimeter of Circular Field = 396 m

Solution ( II )

Now,

We have to find the length of wire which is required to fence it with 5 rounds

In the above solution,

We find the Perimeter of 1 circular field but here we have to find the perimeter of 5 circular field so that the length of wire can cover it.

Therefore,

= 5 * Perimeter of 1 circular field

= 5 * 396

= 1,980m

Hence, The length of the wire required to fence with 5 rounds is 1980m $.$