An iron billet (k = 65 W/m K) measuring 20 * 15 * 80 cm is exposed to a convective flow resulting in convection coefficient of 11.5 W/m2 K. Determine the Biot number

An iron billet (k = 65 W/m K) measuring 20 * 15 * 80 cm is exposed to

1.	An iron billet (k = 65 W/m K) measuring 20 * 15 * 80 cm is exposed to a convective flow resulting in convection coefficient of 11.5 W/m2 K. Determine the Biot number
A.	0.02376
B.	0.008974
C.	0.004563
D.	0.006846
Answer» E.