Question

Square piece of ground is 75 metre long find the cost of erecting a fence around it at rupees 4 per metre

Answer 1

Given :

• Square piece of ground = 75 m

• Cost of fencing per metre = Rs.4

To find :

• Cost of erecting a fence around all =?

Step-by-step explanation:

Square piece of ground is 75 metre long. [Given]

It means one side of square having lenght = 75 m.

Now,

We have to find the Perimeter of the square.

We know that,

Perimeter of the square = 4 × side

Substituting the values in the above formula, we get,

= 4 × 75

= 300

Thus, The Perimeter of the square = 300 m.

Now,

Cost of fencing per metre = Rs.4 [Given]

Cost of erecting a fence around 300 m= Perimeter of square × Cost of fencing per metre.

Substituting the values in the above formula, we get,

= 4 × 300

= 1200.

Hence, Cost of erecting a fence around 300 m = Rs. 1200.

Answer 2

Given:-

Length of the square ground is 75 m.

To find:-

Cost of erecting a fence around it at ₹4 per meter.

Solution:-

Perimeter of the square ground = 4*length of each side

P = 4*75

⇒P = 300 m

Now, 300 m of fence is required to be erected around the square ground.

As it costs ₹4/m, total cost required to erect the fence =

₹4*300

= ₹1,200

∴So, the cost of erecting a fence around the square ground at rupees 4 per meter is ₹1,200.