Consider the two circles Ci and C2 as shown. The central angles in both the circles measure the same.

The correct answer is -3.9> -4.5 gucci playa

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.