SOLUTION: If two Rectangles are similar and Rectangle A has and area of 180ft^2 and a lenght of 20ft, and rectangle B has an area of 45 ft ^2. What is the perimeter of rectangle B?

Question 934339: If two Rectangles are similar and Rectangle A has and area of 180ft^2 and a lenght of 20ft, and rectangle B has an area of 45 ft ^2. What is the perimeter of rectangle B?
Answer by josgarithmetic(39630) (Show Source): You can put this solution on YOUR website!
Rectangle A:
L and w for length and width.

, the width of rectangle A.

The lengths for width and length of rectangle B are some factor k of w and L. since we know rectangle B is smaller area while being similar to rectangle A.

Rectangle B:
, and we already now know w and L.
, and we also were given .

The perimeter for rectangle B using the factor k,

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