Answer:
The value of x is 3.
Length of the rectangle = 3×3 = 9 cm
Explanation:
We are given the following information in the question:
Perimeter of rectangle = 24 cm
Length of the rectangle = 3x cm
Width of the rectangle = 3 cm
Formula:
Perimeter of rectangle =
![2* (Length + Width)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/p58ti0gk568f6toea0iy37lb3p9j27kmmr.png)
Putting all the values, we have:
![24 = 2* (3x+3)\\24 = 6x + 6\\18 = 6x\\x = 3](https://img.qammunity.org/2020/formulas/mathematics/middle-school/h6vpvtlt1kux5nzkbobi3cgjdb9h940vp3.png)
Hence, Length of the rectangle = 3×3 = 9 cm