The value of x is 7 and the right option is A. 7.
What is perimeter?
Perimeter is the total distance around an object.
To find the value of x, we use the formula of the perimeter of a rectangle.
Formula:
- P = 2(L+W)............... Equation 1
Where:
- P = Perimeter of the rectangle
- L = Length of the rectangle
- W = Width of the rectangle
From the question,
Given:
Substitute these values into equation 1 and solve for x
- 64 = 2(11+3x)
- 64 = 22+6x
- 6x = 64-22
- 6x = 42
- x = 42/6
- x = 7
Hence, the value of x is 7 and the right option is A. 7.
Learn more about perimeter here: https://brainly.com/question/19819849
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