Perimeter of a rectangle = 2 (length+ breath)
so = 2(4.6+3.5)= 2 × 8.1 = 16.2 cm it is your answer.

Perimeter of a Rectangle:

To find the perimeter of a rectangle, we need to add the lengths of all four sides of the rectangle.

Given Information:
- Length of the rectangular paper = 4.6 cm
- Breadth of the rectangular paper = 3.5 cm

Calculating the Perimeter:

To calculate the perimeter, we need to add the lengths of all four sides of the rectangle.

Step 1:
Identify the lengths of the sides of the rectangle.

- Length of one pair of opposite sides = 4.6 cm
- Length of the other pair of opposite sides = 3.5 cm

Step 2:
Add the lengths of all four sides.

Perimeter = Length of one pair of opposite sides + Length of the other pair of opposite sides + Length of one pair of adjacent sides + Length of the other pair of adjacent sides

In this case, the lengths of all four sides are the same as the lengths of the pairs of opposite sides.

Perimeter = 4.6 cm + 4.6 cm + 3.5 cm + 3.5 cm

Step 3:
Perform the addition.

Perimeter = 4.6 cm + 4.6 cm + 3.5 cm + 3.5 cm
Perimeter = 9.2 cm + 7 cm
Perimeter = 16.2 cm

Step 4:
Write the final answer.

The perimeter of the rectangular paper is 16.2 cm.

Summary:
- The length of the rectangular paper is 4.6 cm.
- The breadth of the rectangular paper is 3.5 cm.
- To find the perimeter, we add the lengths of all four sides.
- The perimeter of the rectangular paper is 16.2 cm.