Question

The radius of a circular garden is 56 m. What is the cost of four round fence around this garden at the rate of 40 per metre?​

Answer 1

Answer:

• The cost of four round fence around this garden is ₹ 56320.

Step-by-step explanation:

Given that:

• The radius of a circular garden is 56 m.

To Find:

• What is the cost of four round fence around this garden at the rate of 40 per metre?

Finding the circumference of the garden:

We know that.

• Circumference of a circle = 2π × Radius

⟿ Circumference = 2 × π × 56

⟿ Circumference = (2 × 22 × 56)/7

⟿ Circumference = 2464/7

⟿ Circumference = 352

∴ Circumference of the garden = 352 m

Finding the four round of the garden:

⟿ Four round = 352 × 4

⟿ Four round = 1408

∴ Four round of the garden = 1408 m

Finding the cost of four round fence:

⟿ Cost = 1408 × 40

⟿ Cost = 56320

∴ The cost of four round fence = ₹ 56320

Answer 2

Question:-

• The radius of a circular garden is 56 m. What is the cost of four round fence around this garden at the rate of 40 per meter ?

To Find:-

• Find the cost of four round fence around this garden at the rate of 40 per metre ?

Formula to be Used:-

• Circumference of Circle = 2πr

Solution:-

First ,

We have to find the circumference of the garden:-

$\sf\longrightarrow \: Circumference = 2 \times \pi \times r$

$\sf\longrightarrow \: Circumference = \cancel { 2 \times \dfrac { 22 } { 7 } \times 56 }$

$\sf\longrightarrow \: Circumference = 352 \: m$

Now ,

We have to find the four rounds fencing around the garden:-

$\sf\longrightarrow \: Fencing \: of \: four \: rounds = 352 \times 4$

$\sf\longrightarrow \: Fencing \: of \: four \: rounds = 1408$

Now ,

We have to find the cost for four rounds of fencing:-

$\sf\longrightarrow \: Cost = 1408 \times 40$

$\sf\longrightarrow \: Cost = 56,320$

Hence ,

• Cost four rounds of fencing is 56,320