Question

A rectangular field has an area 180 square metre. Its breadth is ⅘ fifth of its length, find the total cost for fencing this field at the rate of 22 rupees per metre​

Answer 1

Answer:

Solution

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Let the length of the field be 9x and breadth be 5x.

9x×5x=14580

45x

2

=14580

x

2

=324

x=18

Hence, length=162m and breadth=90m.

Perimeter = 2(l+b)=2(162+90)=2(252)=504m

Therefore,

Cost of fencing = 504×3.25=1638 Rs.

Step-by-step explanation:

Answer 2

Answer:

Rs. 1638

Step-by-step explanation:

Let the length of the field be 9x and breadth be 5x.

9x×5x=14580

45x

2

=14580

x

2

=324

x=18

Hence, length=162m and breadth=90m.

Perimeter = 2(l+b)=2(162+90)=2(252)=504m

Therefore,

Cost of fencing = 504×3.25=1638 Rs.