To analyze the expression \( 512 \cdot \sqrt{16} \), we first simplify it:
-
Calculate \( \sqrt{16} \): \[ \sqrt{16} = 4 \]
-
Now substitute this value back into the expression: \[ 512 \cdot \sqrt{16} = 512 \cdot 4 \]
-
Next, perform the multiplication: \[ 512 \cdot 4 = 2048 \]
Since \( 2048 \) is a whole number, it is a rational number.
Thus, the correct response is: Rational, because both numbers are rational.