## 11) The radius of a circular park is 63 m. Find the cost of fencing it at Rs. 12 per meter. (A) Rs. 4,752 (B) Rs. 7,452 (C)

Question

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

## Answers ( )

Answer:(A)Rs. 4,752The cost of fencing is Rs. 4,752

Step-by-step explanation:Given:• The radius of a circular park = 63 m

• Rate = Rs. 12 per meter

To Find:• The cost of fencing

Solution:⇒ Radius (r) = 63 m

★

Find the Circumference:Circumference of the circle = 2 π r

⇒ 2 × 22 / 7 × 63

⇒ 44 / 7 × 63

⇒ 44 × 9

⇒

396 mCircumference of the circle = 396m____________________________

★

Find the cost of fencing:Circumference × Rate

⇒ 396 × 12

⇒ 4,752

Therefore,

(A) Rs. 4,752The cost of fencing is Rs. 4,752Radius of circular park = 63 m.

Circumference = 2*π*radius

= 2*22/7*63

= 44*9

= 396 m.

Now,

Rate of fencing the circumference of the circular park = Re.12 per metre

So,

the cost of fencing = Circumference*Rate

= 396 * 12

= Re.4752.

Hope this helps…