to find velocity v?

Question

c=3*10^8

0.99=(1-v^2/c^2)^1/2

Answer 1

.99^2 = .9801 = 1 - v^2/c^2
v^2/c^2 = 0.0199
v/c = 0.1411
v = 4.23*10^7 m/s