Question

The radius of a circular park is 56 m.find the cost of fencing it all around the boundary at the rate of ₹ 11 per metre.

Answer 1

Answer:

Step-by-step explanation:

Radius of park = 56 m = r

Cost for fencing = ₹11/m

Circumference of park =

$2\pi r \\= 2 * \frac{22}{7} * 56\\= 44 *8 \\= 352 m$

Total Cost of Fencing = ₹11/m * 352 = ₹3872

Answer 2

Given

radius (r)= 56m

We know that

Boundary = Circumference

So,

Circumference of park =

$2\pi r \\ = 2 \times \frac{22}{7} \times 56 \\= 356m$

Since 1 metre costs rs.11

so 356 metre costs= 11×356

= rs 3916

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