solve the solutions of these very important equations

Answer:
C: x = 150
F: x = 0.849
I: x = 2.667
Step-by-step explanation:
C:
x^2 = 22500
Therefore x = √22500
x = 150
F:
x^2 = 0.72
Therefore x = √0.72
x = 0.8485281
I:
9x^2 = 64
(9x^2) ÷ 9 = (64) ÷ 9
x^2 = (64÷9)
x=√(64/9)
x = 8/3 = 2.66667