Question

The breadth of a rectangular field is twice its length. If the area of the field is 1083 m² find the cost of fencing it at 35 per m
but the ans is ₹3990 so dont copy paste of anyone if you can do so please do​

Answer 1

Answer:

let length be I so breadth=21

=21x1 =1058

1^2=529

1=23

breadth=21-46

of the field=2×69=138

total cost 35x138m=4830 rs

Step-by-step explanation:

i thik your answer is wrong

Answer 2

Answer:

Let length be l.

So,

$breadth = 2 \times length$

$breadth = 2l$

$area \: of \: rectangle = l \times b$

$1083 {m}^{2} = l \times 2l$

$1083 = 2 {l}^{2}$

${l}^{2} = \frac{1083}{2}$

${l}^{2} = 541.5$

$l = \sqrt{541.5}$

$l = 23.2701526$

$b = 2l = 2 \times 23.2701526 = 46.5403052$

For fencing, we need to find perimeter

$perimeter = 2(l + b)$

$2(23.2701526 + 46.5403052)$

$2 \times 69.8104578$

$139.620916$

Cost of fencing = Perimeter × Cost for 1m

$cost \: of \: fencing \: = 139.620916 \times 35$

$4,886.73206$

₹4886.73206

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