Question

Compute the area ratio of thin walled tube samples having an external diameter of 6 cm and a wall thickness of 2.25 mm. do you recommend the sampler for obtaining undisturbed soil samples? why

Answer 1

we all know that our environment is very necessary for our healthy existence on the earth. A healthy environment depends on the good habits of human beings and the circumstances we create. Human, animal, plants, earth and environment are indirectly connected to each other and necessary for the existence of healthy life here.

However, by any means if our environment gets affected negatively, creates lots of problems and many challenges in living a simple and healthy life. Our environment acts as a natural world for us and provides a protection to us from the natural calamities. However, it becomes helpless in protecting us if we disturbs its natural cycle and force it to harm us.
we all know that our environment is very necessary for our healthy existence on the earth. A healthy environment depends on the good habits of human beings and the circumstances we create. Human, animal, plants, earth and environment are indirectly connected to each other and necessary for the existence of healthy life here.

However, by any means if our environment gets affected negatively, creates lots of problems and many challenges in living a simple and healthy life. Our environment acts as a natural world for us and provides a protection to us from the natural calamities. However, it becomes helpless in protecting us if we disturbs its natural cycle and force it to harm us.

Answer 2

1. Answer:

External diameter = 6cm=6omm

Wall thickness = 2.25mm

Internal diameter = (external diameter - 2 x wall thickness)

                             = (60-2x2.25) = 55.5mm

          Area= 60 x60-55.5x55.5/55.5x55.5

                       = 16.88    

Explanation:  

Since the area ratio is more than 10%, the sampler is not recommended for  obtaining undisturbed samples. The sample disturbance will not be  insignificant.