California Assessment of Student Performance and Progress (CAASPP) Math Practice Exam

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If a rectangle has a length of 10 cm and a width of 4 cm, what is its area?

30 cm²
40 cm²
50 cm²
60 cm²

The correct answer is: 40 cm²

To find the area of a rectangle, you can use the formula: Area = Length × Width. In this case, with a length of 10 cm and a width of 4 cm, you would multiply these two dimensions together: Area = 10 cm × 4 cm = 40 cm². Therefore, the area of the rectangle is 40 cm². Understanding the area calculation is important because it applies to various real-world situations, such as determining the amount of space available in a room or the amount of material needed to cover a surface.