Help me ASAP PLEASEE! On these two parts please! 22 points and ill do a brain list

Which of the following is the missing term, a2, of the geometric sequence in which a1=2 and a3=200

Which value is not a solution of 8x^3 – 1 = 0

When are triangles considered similar? a. corresponding angles are equal andcorresponding sides are proportionalb. corresponding angles are proportional andcorresponding sides are equalc. corresponding angles are equal orcorresponding sides are proportionald. corresponding angles are proportional orcorresponding sides are equal select the best answer from the choices providedmark this and retumsave and exitnext