A rectangle has a length of 3x+1 and a width of x. A square has a side length of 3x. The square and the rectangle have the same perimeter. Dimensions of figures
Carol H.
answered 09/21/17
Experienced Mathematics Tutor w/ Master's Degree in Math
2x + 2(3x+1) = 4(3x)
2x + 6x + 2 = 12x
8x + 2 = 12x
2 = 4x
1/2 = x
Rectangle: width = 1/2 and length = 2 1/2
Square: side = 1 1/2
So, both perimeters = 6
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