Find n(A) for the set A {1/3, 2/4, 3/5, 4/6,...,67/69, 68/70}

the square root of what number? if you add that, then someone will probably answer the question.

answer: a

step-by-step explanation: the answer is a due to the rule of symmetry; that a line of symmetry must divide a figure into 2 pieces that are the exact same, only reflected over a line of symmetry. b and c do not have lines of symmetry and would not divide the figure evenly, thus making the answer a.

the answer would be a 24

step-by-step explanation:

c=2πr=2·π·3=24