Question

find the length is 5x+4, breadth is x - 4 of the rectangle if its perimeter is 72cm

Answer 1

Answer:

perimeter = 2 (l+b)

5x +4 + x-4 = 2(6x)

=12x= 72

x= 72/12

x=6

lenght = 34

breath= 2

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Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

we know perimeter of rectangle is 2[l + b]

Given length = 5x + 4

          breadth = x-4

          perimeter=72cm

2[5x +4+x-4]=72

10x+8 +2x -8=72

12x=72

x=72/12

x=6

so, length=5[6]+4=34

 breadth=6-4=2