11 centimeters = 0.11 meters
r=0.11/2 = 0.055m
E=K*2*q / r^2
336 = K*2*q / r^2
q = 336*r^2/2k
q=336*(0.055)^2/(2*9*10^9)
= 5.65 *10^-11 C
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