Question

2. The perimeter of a rectangular swimming pool is 154 m. Its length is 2 mm
twice its breadth. What are the length and the breadth of the pool?
4​

Answer 1

Answer:

length =37 mm

breadth=35 mm

Step-by-step explanation:

2(l+b)=154

=> (b+2+b)2=154

=> 2×(2+2b)=154

=>4+4b=154

=>4b = 154-4

=> b=150÷4

=> b=35.

Hence , breadth = 35 mm

and length = 2+35= 37mm

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Answer 2

Answer:

Breadth = 25 m

Length = 52 m

Step-By-Step Explanation:

Given that,

Perimeter of rectangular swimming pool = 154 m

Let the breadth of rectangle be = x

According to the question,

Length of the rectangle = 2x + 2 We know that,

Perimeter = 2(length + breadth)

⇒ 2(2x + 2 + x) = 154 m

⇒ 2(3x + 2) = 154

⇒ 3x +2 = 154/2

⇒ 3x = 77 – 2

⇒ 3x = 75

⇒ x = 75/3

⇒ x = 25 m

Therefore, Breadth = x = 25 cm

Length = 2x + 2

= (2 × 25) + 2

= 50 + 2

= 52 m