Can y’all help me solve for K ?!

Look at this pattern ; 1,4,9, number 10000 belongs in this pattern . what’s the place of this number?

Janice determined there were 10 possible outcomes when tossing two coins and spinning a spinner numbered 1 through 6. what is the correct number? what might have been janice's error?

(a.s."similarity in right triangles"solve for xa.) 10b.) 20c.) 14.5d.) [tex] 6\sqrt{3} [/tex]