To find out how many inches are in 4 feet, we can multiply the number of feet by the number of inches in one foot. Since there are 12 inches in a foot, we can express this as:
\[ 4 \text{ feet} \times 12 \text{ inches/foot} = 48 \text{ inches} \]
Now, let's evaluate the given expressions:
-
12 + 4: This expression does not represent the conversion of feet to inches. It simply adds 12 and 4 together. (Not applicable)
-
4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4: This expression is equivalent to adding 4 twelve times, which is 4 multiplied by 12 (4 × 12 = 48). (Applicable)
-
12 ÷ 4: This expression calculates how many inches are in 1 foot if dividing 12 inches by 4, which results in 3. It does not represent how many inches are in 4 feet. (Not applicable)
-
4 × 12: This expression directly calculates the total number of inches in 4 feet, which equals 48 inches. (Applicable)
-
12 + 12 + 12 + 12: This expression adds 12 four times, which also equals 48 inches (12 × 4 = 48). (Applicable)
So, the expressions that describe how many inches are in 4 feet are:
- 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4 + 4
- 4 × 12
- 12 + 12 + 12 + 12
These three options apply.