A cylindrical water tank has a diameter of 9 ft and a height of 12 ft. the water surface is 2 ft from the top. about how much wa
2 answers:
Answer:
Option 2 is correct.
Step-by-step explanation:
We have been given diameter of the tank 9 ft and height of the cylindrical water tank 12 ft
Radius is half of diameter that is 9/2=4.5
Since, water surface is 2 ft from the top
New height will become 12-2=10 ft
We have to find how much water tank contains means the capacity of tank to contain water
We will find volume of the cylindrical water tank by using formula:
On substituting the values r=4.5,h=10 andwe get
Therefore,Option 2 is correct.
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Taking into account the rule of three for the change of units, the mass of the book is 45600 miligrams.
First of all, the rule of three is a mathematical tool that helps you quickly solve proportionality problems.
Having three known values and one unknown, a proportional relationship is established between all of them in order to find the fourth term of the proportion.
If the relationship between the magnitudes is direct (when one magnitude increases, so does the other; or when one magnitude decreases, so does the other), the rule of three is applied as follows, where a, b and c are known values and x is the unknown to calculate:
a → b
c → x
So:
Being 1 kg equivalent to 1000000 milligrams, In this case the rule of three is applied as follows: if 1 kg equals 1000000 milligrams, 4.56×10⁻² kg equals how many milligrams?
1 kg → 1000000 milligrams
4.56×10⁻² kg → x
So:
<u><em>x=45600 miligrams</em></u>
In summary, the mass of the book is 45600 miligrams.
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