Testing how fast a brainy question is solved so what is the least common multiple of 6 and 12

Consider circle c with angle acb measuring 3/4 radians.if minor arc ab measures 9 inches, what is the length of the radius of circle c? if necessary, round your answer to the nearest inch.

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1

Will mark brainliest! ( explain the answer too, it can be one sentence)