Question

The length of a rectangle is 6 m less than 3 times it's breath. Find the dimensions of the rectangle if it's perimeter is 148 m.​

Answer 1

Answer:

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Answer 2

Answer:

Let the length and breadth of rectangle be l and b .

Given that length is 6m less than three times its breadth

⇒l=3b−6.............................(i)

Given its perimeter is 148m.

we k.n.t perimeter of a rectangle is 2(l+b)

⇒2(l+b)=148

$⇒(l + b) \: = \frac{148}{2} = 74.........(ii)$

Substitute (i) in (ii)

l+b=(3b−6)+b=74

4b=74+6=80

$b = \frac{80}{4} \: = 20$

Substituting value of b in (i)

l=3b−6=3(20)−6=60−6=54

Thus,length and breadth of given rectangle are 54m,20m.