shyperson100 shyperson100
  • 27-09-2020
  • Mathematics
contestada

A. The perimeter of the rectangle below 15 66 units. Find the length of side CD.
Write your answer without variables

A The perimeter of the rectangle below 15 66 units Find the length of side CD Write your answer without variables class=

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Hrishii
Hrishii Hrishii
  • 27-09-2020

Answer:

CD = 14 units

Step-by-step explanation:

AB = 2x, BC = 3x - 2

Perimeter of rectangle = 66 units

[tex] \therefore2(2x + 3x - 2) = 66 \\ \\ \therefore(5x - 2) = \frac{66}{2} \\ \\ \therefore(5x - 2) = \frac{66}{2} \\ \\ \therefore(5x - 2) = 33 \\ \\ \therefore 5x = 33 +2 \\ 5x = 35 \\ \\ x = \frac{35}{5} \\ \\ x = 7 \\ \\ \because \: CD = AB \\ (Opposite \: sides \: of \: a \: rectangle) \\

\because AB = 2x=2\times 7= 14\\

\huge{ \red{ \boxed{\therefore CD = 14 \: units}}}[/tex]

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