Assessment and Learning in Knowledge Spaces (ALEKS) Basic Math Placement Practice Test

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Get ready for the ALEKS Basic Math Placement Test. Study with interactive quizzes and detailed explanations. Prepare to excel!

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How is the perimeter of a triangle calculated?

A = (1/2)bh
P = side + side + side
SA = 2(wl + hl + hw)
V = lwh

The correct answer is: P = side + side + side

The perimeter of a triangle is calculated by adding together the lengths of all three sides of the triangle. This is represented by the formula P = side + side + side. Each side length is included in the total, resulting in the complete perimeter measurement. In contrast, the other options relate to different mathematical concepts. The first option (A) is the formula for the area of a triangle, where 'b' is the base and 'h' is the height. The third option (C) refers to the surface area of a rectangular prism, incorporating the width (w), length (l), and height (h). Lastly, the fourth option (D) provides the formula for the volume of a rectangular prism, also utilizing the length (l), width (w), and height (h). Understanding the specific formulas for different geometric calculations helps clarify why the perimeter of a triangle is specifically found by adding the lengths of its sides.