Question

The breadth of a rectangular field is twice its length. If the area of the field is 1083 m?
find the cost of fencing it at +35 per m.​

Answer 1

Step-by-step explanation:

let breadth=2x

let length=x

area=1083m

area=length×breadth

1083m=2x×3x

1083m/3=x

361=x

breadth=2x=722m

perimeter=2(l+b)

p=2(361+722m)

p=2166

cost of fencing the whole field=35×2166=rs85816

Answer 2

Answer:

Explanation:

Given :

• The breadth of a rectangular field is twice its length.
• The area of the rectangular field is 1083 m^2.

To Find :

• The cost of fencing it at 35 per m.

Formula to be used :

• Area of rectangle = Length × Breadth
• Perimeter of rectangle = 2(l + b)

Solution :

Let, length of the rectangular field is "l" m.

°.° The breadth of a rectangular field is twice its length.

.°. Breadth of the rectangular field is "2l" m.

★Length and breadth,

A= l × b

⇒1083 = l × (2l)

⇒ 1083 = 2l^2

⇒ 529 = l^2

⇒ l = 23 m

Breadth = 2l

⇒ b = 2 × 23

⇒ b = 46 m

★Perimeter,

P = 2(l + b)

⇒ P = 2(23 + 46)

⇒ P = 2(69)

⇒ P = 138 m

★Cost of fencing,

⇒ 35 × 138

⇒ Rs. 4830

Hence, The cost of fencing is Rs. 4830.