Question

Q4. Find the cost of fencing a square park of side 320 m at the rate of Rs. 50 per metre.

Answer 1

perimeter of square = 4*side

perimeter of suqare park = 4*320=1280m

cost of fencing= 50*1280=6,400

Answer 2

Before, finding the answer. Let's find out on how we can find the answer.

• According to the question, we must first find the perimeter of the Square Park by the formula of

$\tt Perimeter \: of \: square = \sf4 \times a$

• Then, we must multiply with the rate.

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Given :

• Side = 320 m
• Rate = Rs. 50

To find :

• Total Cost of Rate

Solution :

We know that,

Perimeter of Square Park = 4 × a

= 4 × 320 m

= 1280 m

Rate of Fencing per meter = perimeter × rate

= 1280 × 50

= Rs. 64000

Hence, the Rate of Fencing is Rs. 64000.

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Know more :

• Formula for Perimeter of Square :

$\sf \: 4 \times a$

• Formula for Area of Square :

$\sf a \times a$

Where, a is the side.