SOLUTION: Area of a rectangle is 9600 square unit centimetre. If the ratio of the length to the breadth is 3:2 , find its length

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Question 882906: Area of a rectangle is 9600 square unit centimetre. If the ratio of the length to the breadth is 3:2 , find its length
Answer by alicealc(293) About Me  (Show Source):
You can put this solution on YOUR website!
length : breadth = 3 : 2
Let length = 3x, breadth = 2x
Area of rectangle = length * breadth
9600+=+3x+%2A+2x
9600+=+6x%5E2
x%5E2=9600%2F6
x%5E2=1600
x=sqrt%281600%29
x = 40
length = 3x = 3 * 40 = 120 cm