Answer:
The required thickness of the tank wall is 87.7668 mm.
Step-by-step explanation:
Given :
Volume of vessel is V=1.5 m³.
A spherical pressure vessel is of compressed natural gas at P=22 MPa.
If the tank is made of A516 grade 60 steel with a maximum normal stress 150 MPa.
i.e. 
To find : What is the required thickness of the tank wall?
Solution :
The diameter of the vessel is given by,






Convert into mm,

The thickness of the wall tank is given by,




Therefore, the required thickness of the tank wall is 87.7668 mm.
The answer is D. 15+18+12+5= 50 and there are 5 ramblers
I feel like I just solved this one. its -1 isn't it?
Answer:
5 chickens, 20 goats
Step-by-step explanation:
We can set up two equations and use substitution
There are 25 total goats and chickens, so

Goats have 4 feet and chickens have two, so

By solving for G in the first equation,

We can now use substitution,

We have 5 chickens, so we have 20 goats.
Let's double check:

It checks out!