Difficulty: Easy
Correct Answer: ₹16,500
Explanation:
Introduction / Context:
This is a direct application of area and cost calculation. For a rectangular floor, area is simply length * width. Once area is found in square metres, multiply by the slab rate (₹ per sq m) to get the total paving cost. The main focus is clean multiplication and keeping units consistent.
Given Data / Assumptions:
Concept / Approach:
Compute rectangular area in sq m, then multiply by ₹800 per sq m to get total cost in rupees.
Step-by-Step Solution:
Verification / Alternative check:
Since 800 is a large rate, the cost should be in the tens of thousands. The area is about 20.6 sq m, so 20.6 * 800 is about 16,480, close to ₹16,500. The exact multiplication confirms ₹16,500.
Why Other Options Are Wrong:
Common Pitfalls:
Common errors include multiplying 5.5 and 3.75 incorrectly, mixing centimetres with metres, or multiplying by 80 instead of 800. Also, some mistakenly add length and width instead of multiplying them when computing area.
Final Answer:
₹16,500
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