Answer:
this is the way we calculate it ♡♡♡
i think its 21
Step-by-step explanation:
h=7.65
h=k√p
k=h/√p
k=5.4/√1.44
k=4.5
h=4.5√p
when p=2.89
h=4.5√2.89
the 3rd one im pretty sure
