Dimensions 3159

The rectangle is 6 cm longer than the width. A square with a side equal to the length of the rectangle has an area 78 cm2 larger than the rectangle. Calculate the dimensions of the rectangle.

Correct answer:

a =  13 cm
b =  7 cm

Step-by-step explanation:

a=b+6 a2=78+a b a2=78+a(a6) 6a=78 a=78/6=13 cm
b=a6=136=7 cm

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