A cinema Hall has volume of 7500 m3. It is required to have reverberation time of 1.61 seconds. The total absorption in the hall should be _______ (consider 0.161 as multiplication factor in the relevant formula)

A cinema Hall has volume of 7500 m3. It is required to have reverberat

1.	A cinema Hall has volume of 7500 m3. It is required to have reverberation time of 1.61 seconds. The total absorption in the hall should be _______ (consider 0.161 as multiplication factor in the relevant formula)
A.	7500 sabians
B.	750 sabians
C.	1980 W-m2
D.	995 OWU
Answer» C. 1980 W-m2