I made anotherrr ehehheh hope you two make it to this one

Step-by-step explanation:

cool thx i hope you have a great day

28.9 feet

Step-by-step explanation:

From the above question, we have obtained the following values:

Major axis of elliptical chamber = 30 feet

Note that length of the major axis of an elliptical chamber = 2a

Hence, 2a = 30

a = 30/2

a = 15 feet

Focus or foci = c = 4 feet

Length of the minor axis =2b = ??

The formula =

c² = a² - b²

b² = a² - c²

b²= 15² - 4²

b² = 225 - 16

b² = 209

b = √209

b = 14.456832295 feet

How far out from the center along he minor axis should he built his whisper chamber = Length of the minor axis

= 2 × b

= 2 × 14.456832295 feet

= 28.91366459 feet

Approximately = 28.9 feet