Question

Find the cost of fencing a circular garden of radius 25 metres at the rate of rs 3 per meter *​

Answer 1

Answer:

The cost of 25metre is Rs. 75

Step-by-step explanation:

Cost of 1m=Rs.3

25m= 25into 3=75m.

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Answer 2

Given :-

Radius of the garden = 25 m

Cost per square meter = Rs. 3

To Find :-

The cost of fencing a circular garden.

Analysis :-

Firstly, find the circumference of the circular garden by substituting the values given in the question in it's respective formula.

Once you get the circumference, multiply it to the cost per square meter.

Solution :-

We know that,

• c = Circumference
• r = Radius

By the formula,

$\underline{\boxed{\sf Circumference \ of \ a \ circle=2 \pi r}}$

Given that,

Radius (r) = 25 m

Substituting their values,

c = 2 × 3.14 × 25

c = 157 m

Therefore, the circumference of the garden is 157 m.

According to the question,

Cost of the fencing = Circumference of the circle × Cost per meter

By substituting,

= 157 × 3

= Rs. 471

Therefore, the cost of the fencing is Rs. 471.