To determine how many inches are in 4 feet, we can use the fact that there are 12 inches in a foot. Thus, the total number of inches in 4 feet would be calculated as:
\[ 4 \text{ feet} \times 12 \text{ inches/foot} = 48 \text{ inches} \]
Now, let's analyze the given expressions:
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4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4: This is equivalent to \(4 \times 12\), which equals 48.
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4 × 12: This directly calculates to 48.
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12 ÷ 4: This equals 3, which does not relate to our calculation of total inches.
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12 + 4: This equals 16, which also does not relate to our calculation of total inches.
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12 + 12 + 12 + 12: This equals \(4 \times 12\), which also equals 48.
The three expressions that correctly describe how many inches are in 4 feet are:
- 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 (this counts out 12 four times, equivalent to 4 × 12).
- 4 × 12.
- 12 + 12 + 12 + 12 (this is also \(4 \times 12\)).
Thus, the correct answers are:
- 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4
- 4 × 12
- 12 + 12 + 12 + 12