California Assessment of Student Performance and Progress (CAASPP) Math 2025 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What is the perimeter of a rectangle with a length of 10 cm and a width of 4 cm?

28 cm

To find the perimeter of a rectangle, you use the formula:

Perimeter = 2 * (Length + Width).

In this instance, the length is given as 10 cm, and the width is given as 4 cm. Plugging these values into the formula:

Perimeter = 2 * (10 cm + 4 cm)

= 2 * (14 cm)

= 28 cm.

Thus, the calculated perimeter of 28 cm is the correct answer because it accurately reflects the total distance around the rectangle, which is determined by doubling the sum of the length and width. This understanding is crucial because it combines not just the individual measurements but also the concept of perimeter being a total encompassing value.

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