SOLUTION: A base of a rectangle is 3cm longer than the height. The area of the rectangle is 40cm^2. Find the base and the height of the rectangle? Thank you so much for your help

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Question 800431: A base of a rectangle is 3cm longer than the height. The area of the rectangle is 40cm^2. Find the base and the height of the rectangle?
Thank you so much for your help
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
A base of a rectangle is 3cm longer than the height. The area of the rectangle is 40cm^2. Find the base and the height of the rectangle?
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let h=height of rectangle
base of rectangle=h+3
Area=height*base=h(h+3)=h^2+3h
h^2+3h=40
h^2+3h-40=0
(h+8)(h-5)=0
h=-8(reject)
h=5
base=h+3=8
..
height of rectangle=5cm
base of rectangle=8cm