Question

Perimeter of a rectangle is 120 m and its breadth is 42 m. Find its length

Answer 1

Answer:

18m

Step-by-step explanation:

Perimeter of rect.=120m

Breadth=42m

Let length=x

2(l+b)=120

2(x+42)=120

x+42=120/2

x+42=60

x=60-42

x=18

length of rectangle=18m

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Answer 2

Answer:

perimeter of rectangle = 2(l+b)

Step-by-step explanation:

perimeter= 120 m

breadth =42 m

length = ?

so take length =x

= 2(x+42)

x = 120/2

x = 60

x = 60 - 42

x = 36

so length is 36 m

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