8
Step-by-step explanation:
This can be solved in two (2) ways;
Multiply 16 and 4 to get 64. Then;
sqrt (64)
= 8
OR
sqrt (16 * 4)
=
sqrt (16) * sqrt (4)
= 4 * 2
= 8
Learn More:
For more on square-roots check out;
https://brainly.com/question/11019097
https://brainly.com/question/12857593
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