Answer me step by step
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The correct answer is y=28 cm

Explain

Area of 4 congruent parallelograms= 308cm^2

Area of 1 parallelogram = 308/ 4

Area of 1 parallelogram = 77 cm ^2

h+h= 14

As h+h=2h

2h=14

Divide both side by by 2

H= 7

Solve for b

As b+b = 2b

2b+6=y

Subtract both side by 6

2b+6-6=y-6

Combining numbers

2b=y-6

Divide both side by 2

2b/2 = y-6/2

Cancel 2

B= y-6/2

We have of 1 parallelogram = 77 cm^2

H= 7
B= y-6/2

Parallelogram area = bh

So now parallelogram area = y-6/2 x7

And area of 1 parallelogram = 77 cm^2

Y-6/ 2 x 7 = 77

Y-6/2 x 7= 7(11)

Cancel 7

Y-6/2 = 11

Multiple both by 2

2(y-6/ 2) = 11x2

Cancel 2 and multiple numbers

Y-6=22

Add 6 both sides

Y-6+6=22+6

Y=28

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