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EleoNora [17]
3 years ago
5

A square has side length 6x+2. A rectangle with width 3x+1 has the same area as a square. What is the length of the rectangle

Mathematics
2 answers:
o-na [289]3 years ago
6 0

Answer:

12x+4

Step-by-step explanation:

(6x+2)^2=36x^2+24x+4

(36x^2+24x+4)/3x+1=2(6x+2)=12x+4

Over [174]3 years ago
4 0

Answer:

L = 12x + 4

Step-by-step explanation:

(see diagram for reference)

the area of the square

= (6x+2) (6x+2)  (factor out 2 from each parentheses)

= (2)(3x+1)(2)(3x+1)  (group like terms and simplify)

= 4(3x + 1)²

the area of the rectangle,

= (3x+1) (L)

It is given that the square and the circle have the same area, hence we equate the areas of square and rectangle:

4(3x + 1)² = (3x+1) (L)     (divide both sides by 3x+1)

4(3x + 1) = (L)   (rearranging and expanding the parentheses)

L = 12x + 4

Hope this helps

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