What is the perimeter of a rectangle with a length of 4 cm and a width of 3 cm?

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

Perimeter = 2 × (Length + Width).

For the given dimensions, the length is 4 cm and the width is 3 cm. Inserting these values into the formula gives:

Perimeter = 2 × (4 cm + 3 cm) = 2 × 7 cm = 14 cm.

The correct perimeter, therefore, is 14 cm.

While the answer provided as 12 cm may seem plausible, it overlooks the need to add both the length and width together before multiplying by 2. The understanding of how to apply the perimeter formula properly is essential in solving problems related to rectangles accurately.