📏 Feet & Inches
12 inches make one foot.
Line up feet and rulers to see why we multiply (or divide) by 12.
4 ft = ? in
12-inch rulers
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12
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12
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4 feet, side by side
👣 1 ft#1
👣 1 ft#2
👣 1 ft#3
👣 1 ft#4
So we have 12" repeated 4 times. That's why we multiply: 12 × 4.