The cost of fencing a circular field at the rate of Rs 12. per metre is Rs 2640 . find the radius of the field ​

Radius = 35 m 

Cost of fencing circular field is Rs 2640 at rate of Rs 12 per metre.

What is the radius of the circular field ?

 Let the radius of circular field be r metre.

Here , if we'll divide the total cost by per metre cost of fencing then we'll get circumference of the circular field.

➯ Circumference = 2640/12

➯ 220 m

As we know that , formula of circumference is

★ Circumference = 2πr ★

Hence, the radius of circular field is 35 metre.

Radius = 35 m 

Cost of fencing circular field is Rs 2640 at rate of Rs 12 per metre.

What is the radius of the circular field ?

 Let the radius of circular field be r metre.

Here , if we'll divide the total cost by per metre cost of fencing then we'll get circumference of the circular field.

➯ Circumference = 2640/12

➯ 220 m

As we know that , formula of circumference is

★ Circumference = 2πr ★

Hence, the radius of circular field is 35 metre.

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i ran through it by the other answer is wrong