To answer this question, you would need a protractor, which is a device that measures angle. Because this is a picture, I cannot help you. I'm sorry....
What I can tell you is that the angle is less than 90 degrees.
The porosity of the gravel sample is 28.75%
We have to determine.
What is the porosity of the gravel sample?
<h3>The porosity of the gravel sample;</h3>
Porosity is the term which is defined as the volume of voids present in the soil to the total volume of the soil.
The formula used to calculate the Porosity is;

A sponge is a case of a permeable fabric because it incorporates a huge number of purge spaces compared to its volume.
Porosity is the property of a question that communicates the entire volume of purge or pore space within the material.
Hence, the porosity of the gravel sample is 28.75%
Learn more about "porosity" :
brainly.com/question/2593663
Answer:
Correct answer is 30,000
Step-by-step explanation:
From multiplication :
6 * 5 = 30
Now moving to:
60 * 500
Number of ending zeros in both values = 3 ; (000)
This 3 0's will be placed at the end of the result of multiplying 6 by 5
Hence,
6 * 5 = 30
60 * 500 = 30+000 = 30,000
Hence, 60 * 500 = 30000