8 ?
Find the arc length of the semicircle.
Either enter an exact answer in terms of 7 or use 3.14 for I and enter your answer as a decimal.

The answer is 26 to 1

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.