Final answer:
To find the perimeter of a rectangle, multiply the sum of the length and width by 2.
Step-by-step explanation:
The perimeter of a rectangle is found by adding up all the sides.
Let's say the length of the rectangle is l and the width is w.
The formula to find the perimeter is: Perimeter = 2(l + w).
So, multiply the sum of the length and width by 2 to find the perimeter of the rectangle in scientific notation.