High School Placement Test (HSPT) Practice Test

What is the perimeter of a rectangle with dimensions of 30 mm by 20 mm?

1. 0.0006 m

2. 0.06 m

3. 0.6 m

4. 6 m

The correct answer is: 0.0006 m

To determine the perimeter of a rectangle, you can use the formula: Perimeter = 2 × (length + width) In this case, the dimensions are 30 mm (length) and 20 mm (width). Plugging these values into the formula gives: Perimeter = 2 × (30 mm + 20 mm) Perimeter = 2 × 50 mm Perimeter = 100 mm Next, to convert millimeters to meters, you use the fact that 1 m = 1000 mm. Therefore: 100 mm = 100 mm / 1000 = 0.1 m The calculation shows that the perimeter of the rectangle is 0.1 m. Now, regarding the options provided: - The perimeter is neither 0.0006 m nor 0.06 m, as these values do not correspond to the calculated perimeter of 0.1 m. - Additionally, the option stating 0.6 m is also incorrect, as it is larger than our calculated perimeter. - Finally, the option 6 m is far too large when compared to our computed result. The correct calculation indicates that none of the provided options agree with the perimeter of the rectangle, suggesting a