Difficulty: Easy
Correct Answer: 117
Explanation:
Introduction / Context:The area of a rectangle equals length times breadth. With integer sides, the product gives the number of square unit tiles that fit exactly.
Given Data / Assumptions:
Concept / Approach:Area A = L * B. Multiply directly since both are in the same unit.
Step-by-Step Solution:
A = 13 * 9 = 117 square units.Verification / Alternative check:
A quick grid visualization: 13 columns × 9 rows has 117 cells; consistent.Why Other Options Are Wrong:
13 and 9 are side lengths, not areas; 13/9 is irrelevant to area computation.Common Pitfalls:
Confusing perimeter with area; perimeter would be 2(13 + 9) = 44, not listed here.Final Answer:
117
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