What is the perimeter of a rectangle with a length of 8 cm and a width of 5 cm?

• A. 26 cm
• B. 30 cm
• C. 24 cm
• D. 20 cm

Answer: (A)

To determine the perimeter of a rectangle, you can use the formula:

Perimeter = 2 * (Length + Width)

In this case, the length of the rectangle is 8 cm and the width is 5 cm. First, you add the length and width:

8 cm + 5 cm = 13 cm

Next, you multiply the sum by 2 to find the perimeter:

2 * 13 cm = 26 cm

This result signifies the total distance around the rectangle, which means the correct answer is indeed 26 cm.

The other options represent different potential misunderstandings of the calculation. For instance, if someone mistakenly calculated the perimeter by only summing the dimensions or misapplied the formula, they may arrive at those choices. A thorough understanding of the perimeter formula is crucial for recognizing that the correct computational steps lead to the right answer.