Question

find the cost of fencing a rectangular field of lenth 20 m and breath 16 m at the rate of ruppes 20 per meter​

Answer 1

Answer:

Let the length of the field be l

Given width of the field is 16 m

Given Cost of fencing per metre is 20

Total cost of fencing is 2000

⟹ Perimeter of rectangular field is

20

2000

=100 m

⟹2(l+16)=100

⟹l=50−16=34 m

Answer 2

Answer:

perimeter = 2 X ( 20 + 16 )

= 2 X 36

= 72m

cost of fencing the field at the rate of Rs 20 per metre = 72 X 20

= Rupees 1440

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