Question

find the cost of fencing a rectangular Park of length 10 metre and breadth 5 metre at the rate of ?
10 per metre .​

Answer 1

Answer:

Length ( L ) = 10 m

Breath ( B ) = 5 m

Perimeter of rectangular park

= 2 × ( L + B )

= 2 × ( 10 + 5 )

= 2 × 15

= 30 m

Cost of fencing of Park

= 30 × 10

= ₹ 300

( A ) ₹ 300 is correct Answer.

Answer 2

Given :

⬤ Length of Rectangular Park is 10 m .

⬤ Breadth of Rectangular Park is 5 m .

To Find :

⬤ Cost o Fencing at the Rate of Rs. 10 m .

Formula Used :

$\bf[\:{Perimeter \: of \: Rectangle = 2(l+b)}\:]$

• l = length
• b = breadth

Solution :

• Length = 10 m
• Breadth = 5 m

According to the Formula :-

2 (l + b)

2 (10 + 5)

20 + 10

30

Therefore , Perimeter of Rectangular Park is 30 m .

Now :

As given that , We have to Calculate Cost of Fencing at the Rate of 10 m . Hence ,

Cost of Fencing at 1 m = Rs. 10

Cost of Fencing at 30 m = 30(10)

= 300

Therefore , Cost of Fencing at the Rate of Rs. 10 m is Rs. 300 .

Option a) Rs. 300 is Correct .