Which of the following is the best approximation of 6 times the positive square root of 4

Which of the following is the best approximation of 6 times the positive square root of 42?

A.
60.3

B.
44.7

C.
30.0

D.
38.9

To approximate 6×426 \times \sqrt{42}6×42​:

1. First, find the square root of 42. The square root of 42 is approximately 6.486.486.48.
2. Then, multiply this by 6: 6×6.48=38.886 \times 6.48 = 38.886×6.48=38.88.

So, the best approximation is:

D. 38.9.