Answer:
2x + 20
The perimeter of a rectangle is calculated by adding the lengths of all its sides. In this case, the length is given as x + 3 and the breadth is given as 7.
To find the perimeter, we need to add the lengths of all four sides of the rectangle.
The two lengths of the rectangle are x + 3, and there are two of them. So, the total length is 2(x + 3).
The two breadths of the rectangle are 7, and there are two of them. So, the total breadth is 2 * 7.
To find the perimeter, we add the total length and the total breadth:
So, the perimeter of this rectangle would be:
2(x+3+7)=2(x+10) = 2x + 20.
Therefore, the perimeter of the rectangle is 2x + 20.
To better understand this, let's consider an example. If the length (x+3) is 5 and the breadth is 7, we can substitute these values into the formula to find the perimeter:
2(5+7)=2(12) = 24.
So, when the length is 5 and the breadth is 7, the perimeter of the rectangle is 24.
Keep in mind that the value of x can vary, and that will affect the value of the perimeter.
This is for the perimeter of rectangle.