An office floor is shaped like a rectangle that measures 13 units by 9 units. Find the area of the office in square units, assuming the given 13 and 9 are the rectangle’s length and breadth.

Introduction / Context:
This is a direct rectangle area question. When a floor or region is rectangular, its area is found by multiplying its length and breadth. The phrase “square units” means the numeric answer should be expressed as a count of unit squares that can cover the rectangle, so the multiplication result is the area.

Given Data / Assumptions:

• Length = 13 units
• Breadth = 9 units
• Rectangle area formula: area = length * breadth
• Units are generic, so the result is in square units

Concept / Approach:
Use area = 13 * 9. This is a single-step multiplication problem with no unit conversion needed.

Step-by-Step Solution:

Verification / Alternative check:
You can verify by reversing: if area is 117 and one side is 13, the other side must be 117/13 = 9, which matches the given breadth. That consistency confirms the multiplication is correct.

Why Other Options Are Wrong:

Common Pitfalls:
Some learners mistakenly add 13 + 9 instead of multiplying, which gives 22, not an area. Another mistake is confusing area with perimeter (2*(13+9)=44). Always choose multiplication for area of rectangles, and addition-based formula for perimeter.

Final Answer:
117