Question

Find the cost of fencing a rectangular field of length 320 m and breadth 280 m
metre at the rate of R.S 32.50 per meter ​

Answer 1

Given :

• Length of a rectangular field = 320 m
• Breadth of a rectangular field = 280 m
• Cost of fencing a rectangular field per meter = Rs 32.50

To find :

• Cost of fencing a rectangular field.

According to the question,

We know,

• Perimeter of rectangle = 2(l + b)

Where,

• l = Length
• b = Breadth

⇒ Perimeter of rectangle = 2( l + b)

⇒ Perimeter of rectangle = 2(320 + 280) m

⇒ Perimeter of rectangle = 2(600) m

⇒ Perimeter of rectangle = 1200 m

• So, the perimeter of rectangular field is 1200 meter.

Now,

• Cost of fencing a rectangular field per meter = Rs. 32.50

⇒ Cost of fencing = Perimeter × Rs. 32.50

⇒ Cost of fencing = 1200 × Rs. 32.50

⇒ Cost of fencing = Rs 39,000

• So, the cost of fencing a rectangular field is Rs. 39,000.

Answer 2

Answer:

Given :-

• A rectangular field whose length is 320 m and breadth is 280 m at the rate of Rs 32.50 per metre.

To Find :-

• What is the cost of fencing a rectangular field.

Formula Used :-

✪ Perimeter of rectangular = 2(L × B ) ✪

where,

• L = Length
• B = Breadth

Solution :-

Given :

• Length = 320 m
• Breadth = 280 m

According to the question by using the formula we get,

↦ Perimeter = 2(Length × Breadth)

↦ Perimeter = 2(320 + 280)

↦ Perimeter = 2(600)

➠ Perimeter = 1200 m

Hence, the perimeter of a rectangular field is 1200 m.

Now, we have to find the cost of fencing a rectangular field,

Given :

• Cost of fencing per meter = Rs 32.50

⇒ Cost of fencing = 32.50 × 1200

➠ Cost of fencing = Rs 39000

∴ The cost of fencing a rectangular field is Rs 39000 .