To determine the type of number that results from the product of \(\sqrt{100}\) and \(415\), we first calculate \(\sqrt{100}\):
\[ \sqrt{100} = 10 \]
Now we multiply this with \(415\):
\[ 10 \times 415 = 4150 \]
Since \(4150\) is a whole number, it is classified as an integer. Therefore, the correct response is:
an integer