Difficulty: Easy
Correct Answer: 16:5
Explanation:
Introduction / Context:Use the square’s area to get its side, then translate to the rectangle’s dimensions and simplify the ratio.
Given Data / Assumptions:
Concept / Approach:Compute L:B and reduce to lowest terms.
Step-by-Step Solution:
L:B = 64:20 ⇒ divide by 4 ⇒ 16:5.Verification / Alternative check:Values are integers and consistent with the description.
Why Other Options Are Wrong:14:9, 13:12, 17:13 do not match 64:20.
Common Pitfalls:Mistaking “twice the side” as “side + 2”.
Final Answer:16:5.
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