The rectangle

The rectangle has one side 8 cm smaller than the type. If you reduce the length by 6 cm and increase the width by 2 cm, you will get a square whose area is 400 cm2. What are the original dimensions of the rectangle?

Correct answer:

a =  26 cm
b =  18 cm

Step-by-step explanation:

S=400 cm2 S = x2  x=S=400=20 cm  a=x+6=20+6=26 cm
b=x2=202=18 cm

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