What is the perimeter of a rectangle with length 8 cm and width 3 cm?

• A. 22 cm
• B. 24 cm
• C. 28 cm
• D. 30 cm

Answer: (A)

To find the perimeter of a rectangle, you add together the lengths of all the sides. The formula for the perimeter ( P ) of a rectangle is given by:

[ P = 2 \times ( \text{length} + \text{width} ) ]

In this case, the length of the rectangle is 8 cm and the width is 3 cm. Plugging these values into the formula, we get:

[ P = 2 \times (8 , \text{cm} + 3 , \text{cm}) ]

[ P = 2 \times 11 , \text{cm} ]

[ P = 22 , \text{cm} ]

Thus, the perimeter of the rectangle is 22 cm. This calculation shows how the dimensions of the rectangle contribute to the total distance around it, confirming that the correct answer is indeed 22 cm. Knowing the formula for perimeter is essential for solving such problems correctly in the context of geometry.