To evaluate \( 27^{4/3} \), you can follow these steps:
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Rewrite \( 27 \) in terms of its cube root: \[ 27^{4/3} = (27^{1/3})^4 \]
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Since the cube root of 27 is 3: \[ 27^{1/3} = 3 \]
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Now, substitute this value into the expression: \[ (27^{1/3})^4 = 3^4 \]
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Calculate \( 3^4 \): \[ 3^4 = 3 \times 3 \times 3 \times 3 = 81 \]
Thus, \( 27^{4/3} = 81 \).
The answer is 81.