The area of a rectangle is 36 square feet. find the length and width if the length is 4 times the width
2 answers:
Area of a rectangle= length x width
length= 4 x width
36= width x (4 x width)
36= 4 x width^2
36/4= width^2
9=width^2
square root (9)= width
width= 3
36=length x width
36= length x 3
36/3= length
length=12
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