If I have a sound wave with $2$cycles, the pulse duration is $18$usand the listening time is $12$us$,$ and the spatial pulse length was$8$mm$,$ please calculate the following.

A$)$ PRP $=$

B$)$ PRF $=$

C$)$ PD $=$

D$)$ Lt $=$

E$)$ T $=$

F$)=$

G$)$ SPL $=$

H$)$ DF $=$