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Luis models the volume of a popcorn box as a right rectangular prism. Its dimensions are 
3(1)/(2) in by 2 in by 
6(3)/(4) in. How many cubic inches of popcorn would it hold when it is full? Round your answer to the nearest tenth if necessary.

Luis models the volume of a popcorn box as a right rectangular prism. Its dimensions are 312 3 \frac{1}{2} in by 22 in by 634 6 \frac{3}{4} in. How many cubic inches of popcorn would it hold when it is full? Round your answer to the nearest tenth if necessary.

Full solution

Q. Luis models the volume of a popcorn box as a right rectangular prism. Its dimensions are 312 3 \frac{1}{2} in by 22 in by 634 6 \frac{3}{4} in. How many cubic inches of popcorn would it hold when it is full? Round your answer to the nearest tenth if necessary.
  1. Convert to Improper Fractions: To find the volume of a right rectangular prism, we use the formula Volume=length×width×height\text{Volume} = \text{length} \times \text{width} \times \text{height}. The given dimensions of the popcorn box are 3(12)3\left(\frac{1}{2}\right) inches by 22 inches by 6(34)6\left(\frac{3}{4}\right) inches. We need to convert the mixed numbers to improper fractions to make the multiplication easier.
  2. Calculate Volume: First, convert 3(1/2)3(1/2) inches to an improper fraction. 3(1/2)3(1/2) inches is the same as (3×2+1)/2(3 \times 2 + 1)/2 inches, which equals 7/27/2 inches.
  3. Simplify Multiplication: Next, convert 6(34)6\left(\frac{3}{4}\right) inches to an improper fraction. 6(34)6\left(\frac{3}{4}\right) inches is the same as (6×4+3)/4\left(6 \times 4 + 3\right)/4 inches, which equals 274\frac{27}{4} inches.
  4. Divide to Find Volume: Now, multiply the dimensions together to find the volume. The volume VV is given by V=length×width×heightV = \text{length} \times \text{width} \times \text{height}, so V=(72)V = (\frac{7}{2}) inches ×2\times 2 inches ×(274)\times (\frac{27}{4}) inches.
  5. Round to Nearest Tenth: Simplify the multiplication. First, multiply the numerators together: 7×2×277 \times 2 \times 27. Then, multiply the denominators together: 2×1×42 \times 1 \times 4.
  6. Round to Nearest Tenth: Simplify the multiplication. First, multiply the numerators together: 7×2×277 \times 2 \times 27. Then, multiply the denominators together: 2×1×42 \times 1 \times 4.The multiplication of the numerators gives us 7×2×27=14×27=3787 \times 2 \times 27 = 14 \times 27 = 378. The multiplication of the denominators gives us 2×1×4=82 \times 1 \times 4 = 8.
  7. Round to Nearest Tenth: Simplify the multiplication. First, multiply the numerators together: 7×2×277 \times 2 \times 27. Then, multiply the denominators together: 2×1×42 \times 1 \times 4.The multiplication of the numerators gives us 7×2×27=14×27=3787 \times 2 \times 27 = 14 \times 27 = 378. The multiplication of the denominators gives us 2×1×4=82 \times 1 \times 4 = 8.Now, divide the result from the numerators by the result from the denominators to get the volume in cubic inches: 3788\frac{378}{8} cubic inches.
  8. Round to Nearest Tenth: Simplify the multiplication. First, multiply the numerators together: 7×2×277 \times 2 \times 27. Then, multiply the denominators together: 2×1×42 \times 1 \times 4.The multiplication of the numerators gives us 7×2×27=14×27=3787 \times 2 \times 27 = 14 \times 27 = 378. The multiplication of the denominators gives us 2×1×4=82 \times 1 \times 4 = 8.Now, divide the result from the numerators by the result from the denominators to get the volume in cubic inches: 3788\frac{378}{8} cubic inches.To simplify 3788\frac{378}{8}, we perform the division. 378378 divided by 88 equals 47.2547.25 cubic inches.
  9. Round to Nearest Tenth: Simplify the multiplication. First, multiply the numerators together: 7×2×277 \times 2 \times 27. Then, multiply the denominators together: 2×1×42 \times 1 \times 4.The multiplication of the numerators gives us 7×2×27=14×27=3787 \times 2 \times 27 = 14 \times 27 = 378. The multiplication of the denominators gives us 2×1×4=82 \times 1 \times 4 = 8.Now, divide the result from the numerators by the result from the denominators to get the volume in cubic inches: 3788\frac{378}{8} cubic inches.To simplify 3788\frac{378}{8}, we perform the division. 378378 divided by 88 equals 47.2547.25 cubic inches.The question asks for the volume rounded to the nearest tenth. 47.2547.25 rounded to the nearest tenth is 2×1×42 \times 1 \times 400 cubic inches.

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