3
Answer: BSet 2: Area Volume (Beginner)
Explanation
PROBLEM
A rectangle has length 3 and width 7. What is its perimeter?
A rectangle has length 3 and width 7. What is its perimeter?
A.
22
B.✓ Correct
20
C.
15
D.
25
Detailed Explanation
Choice B is the best answer. Perimeter = 2(length + width) = 2(3 + 7) = 20
Why others are wrong:
A: 22 is incorrect because it does not satisfy the equation.
C: 15 is incorrect because it does not satisfy the equation.
D: 25 is incorrect because it does not satisfy the equation.