Final answer:
The perimeter of the rectangle is 35.5 centimeters.
Step-by-step explanation:
To find the perimeter of a rectangle with a length of 5.2 centimeters and a width of 7.25 centimeters, we can use the formula P = 21 + 2w. Substitute the values for length and width into the formula: P = 21 + 2(7.25). Calculate the product inside the parentheses: P = 21 + 14.5. Add the two numbers together: P = 35.5 centimeters.