Question

The length of a marriage hall is four times as much as its breadth if the perimeter of the hall is 420 M find the length and breadth of the marriage hall

Answer 1

42m

Step-by-step explanation:

l=4b

p=420m

p=2(l+b)

420=2(4b+b)

420=10b

b=42m

Answer 2

Answer:

Breadth= 42 m

Length= 42*4=  168 m

Step-by-step explanation:

Take 'x' as the breadth of the hall

Length= 4*x= '4x'

Perimeter= 420m= 2* (l+b)

2* (x+4x)= 420 m

2*5x= 420 m

5x= 420/2= 210

x= 210/5= 42

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Breadth= x = 42 m

Length= 4x = 42*4 = 168 m