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Dimensional Analysis

Question 3 • *25-26 KCS18 Chemistry IC

A clothing pattern calls for 4.81 yd2 of fabric. How many square inches of fabric does the pattern use? (Note: 1 yd = 3 ft., 1 ft = 12 in.)

Answer
A
6,230 in²
B
173 in²
C
77.0 in²

Explanation

Since area units are squared, convert 1 yd² by squaring the length conversion: 1 yd² = (36 in)² = 1,296 in². Then 4.81 yd² × 1,296 in²/yd² = 6,233.76 in², which rounds to 6,230 in². So the correct choice is 6,230 in².

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