The value of the 6 in 26.945 is blank the value of the6 in 17.64

The first one, the six is in the one's place. the second on the six is in the tenths place.

There are 8,654 left

First step is to get rid of the square root. remember that a square root is the same as raising to the (1/2) power. see below: multiply exponents per exponent rules to get: remember you subtract exponents from the denominator and add exponents in the numerator so: simplify further: so a is the correct choice. if you don't understand this google exponent rules and it will you understand. look at the image results.