Answer:
1.3 x 10^-10 F
Explanation:
r = 5 cm = 0.05 m, d = 3.2 mm = 0.0032 m
Dielectric constant for mica, K = 6
The formula for the parallel plate capacitor is given by
C = K ∈0 A /d
C = (6 x 8.854 x 10^-12 x 3.14 x 0.05 x 0.05) / 0.0032
C = 1.3 x 10^-10 F