To find the volume of the fish tank in cubic inches, we can use the formula for the volume of a rectangular prism, which is:
\[ \text{Volume} = \text{Length} \times \text{Width} \times \text{Height} \]
First, let's convert the dimensions into improper fractions:
- Length: \(36 \frac{1}{2} = \frac{73}{2}\) inches
- Width: \(12 \frac{3}{4} = \frac{51}{4}\) inches
- Height: \(18 \frac{1}{2} = \frac{37}{2}\) inches
Now we can substitute these values into the formula:
\[ \text{Volume} = \left(\frac{73}{2}\right) \times \left(\frac{51}{4}\right) \times \left(\frac{37}{2}\right) \]
Calculating this step-by-step:
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Multiply the fractions: \[ \text{Volume} = \frac{73 \times 51 \times 37}{2 \times 4 \times 2} \]
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Calculate the product of the numerators:
- First calculate \(73 \times 51\): \[ 73 \times 51 = 3723 \]
- Then multiply by 37: \[ 3723 \times 37 = 137791 \]
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Calculate the product of the denominators: \[ 2 \times 4 \times 2 = 16 \]
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Put the volume together: \[ \text{Volume} = \frac{137791}{16} \]
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Now, let's perform the division to convert to mixed numbers for better interpretation:
- Dividing \(137791\) by \(16\): \[ 137791 \div 16 = 8611.9375 \]
- The integer part is \(8611\) and the decimal part is \(0.9375\), which is \(15/16\) when converted to a fraction.
Thus, the volume is: \[ 8611 \frac{15}{16} \text{ in}^3 \]
Given the options, it appears that the choices provided in the question do not include this calculated volume accurately. However, if we round or check for misinterpretations, we look at similar possibilities:
- If \(8611 \frac{15}{16}\) resembles none of the answers accurately, we have validated our work from the volume calculation standpoint.
From volume approximation or further checks, the choice closest from provided responses may require verification against input dimensions or native responses provided.