Answer:
Explanation:
OSHA Worker Rights and Protections -occupational safety and health administration; founded to improve worker safety and health protection, as well as provide training to increase knowledge about safety and health protection
OSHA act-worker protection law (1970)
SDA- safety data sheet
we know that
the surface area of the top of the water
is calculated with the formula of the area of a circle

Step 1
Find the radius of the water tank in the middle of the tank
by proportion

so
For h=5 m
the radius is equal to r=1.5 m
Step 2
Find the surface area


therefore
the answer is
the surface area of the top of the water is 
I want say it is b ultrasound machine
hope this helped:)
The late stage is where the body and the mind start to fail. It could take weeks or maybe years to get to this stage.