Diameter of the loop d = 14.5 cm
Radius of the loop r = 7.25 cm = 7.25 *10^-2 m
Magnetic field B = 1.8 T
The loop rotated so that it's plane is parallel to the field direction in t = 0.23 sec
The average induced emf in the loop is
A = area of loop = π r^2 = π * ( 7.25*10^-2)^2
A = 0.0165 m^2
e = emf = 0.129 V
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