Answer:
54 degrees
Step-by-step explanation:
4x + 6 + 11x - 6 = 180
Then solve
r = 6 in
=
r²h/3 = 216
r² (18/3) = 6 r² = 216
r² = 216/6 = 36
r = 6
9+10=21
bettttt
ima do it anyway