Question

Length of. The. Rectangle. Is5x+4. Breaght. Is. X-4. If. It's. Perimeter. Is. 72. Find. The. Sum. And. Explain

Answer 1

Answer:

length of the rectangle=5x+4

breadth=x-4

perimeter=2 (l+b)

72=2 ((5x+4 ) +(x-4))

72=2 (5x+4+x-4)

72=10x+8+2x-8

72=10x+2x+8 -8

72=12x+0

72=12x

72÷12=x

6=x

x=6

length=5x+4

=5 (6)+4

=30+4

=34

length=34

breadth=x-4

=6-4=2

breadth=2

Answer 2

The correct answer is "x=6".

Step-by-step explanation:

$The \ given \ values \ are:\\The \ length \ of \ a \ rectangle,L=5x+4\\The \ breadth \ of \ a \ rectangle,B=x-4\\Perimeter,P=2(L+B)\\On \ putting \ the \ values \ in \ the \ above \ formula,we \ get\\72=2[(5x+4)+(x-4)]\\36=5x+4+x-4\\36=6x\\x=\frac{36}{6}\\ x=6\\\\Length=5\times 6+4=30+4=34\\Breadth=6-4=2$

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