SOLUTION: the width of a rectangle is one third its length. if the area of the rectangle is 20sq.inch.,what are the dimension of the said figure?

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Question 656851: the width of a rectangle is one third its length. if the area of the rectangle is 20sq.inch.,what are the dimension of the said figure?

Answer by shweta(56) About Me  (Show Source):
You can put this solution on YOUR website!
width=w and length =l
w= (1/3)*l =l/3 .(1)
Area =20 inch^2
a= l*w
20 = l*l/3
20 = (l^2)/3
20*3 = l^2
l^2= 60
l= sqrt 60
w=l/3
w= (sqrt 60)/3