3
Answer: DSet 1: Area Volume (Beginner)
Explanation
PROBLEM
A rectangle has length 12 and width 8. What is its perimeter?
A rectangle has length 12 and width 8. What is its perimeter?
A.
38
B.
20
C.
42
D.✓ Correct
40
Detailed Explanation
Choice D is the best answer. Perimeter = 2(length + width) = 2(12 + 8) = 40
Why others are wrong:
A: 38 is incorrect because it does not satisfy the equation.
B: 20 is incorrect because it does not satisfy the equation.
C: 42 is incorrect because it does not satisfy the equation.