The formula of a volume of a cylinder:
The formula of a volume of a cone:
If a cone and a cylinder have the same radius and the same height, then a volume of a cylinder is three times greater than a volume of a cone.
<h3>Answer: The volume of a cone is equal 120 cm³.</h3>
Please, use ( ) around fractional coefficients:
<span>1/3x-9y, 6/5x-15y should (probably) be written as (1/3) - 9y and (6/5)x - 15 y.
The LCD here is 3(5) = 15.
Mult. </span><span>1/3x-9y and 6/5x-15y by 15, and then divide the result by 15:
</span>15 [ (1/3)x - 9y and (6/5)x - 15 y ]
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15
This simplifies to:
5x - 135y and 18x - 225y
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15 15
These fractions are equivalent to the original ones, but now the common denominator, 15, is evident.
To simply this, you just divide the numerator and denominator by its GCF (Greatest common factor)
Factors of 18 : 1,2,3,6,9,18
Factors of 30 : 1,2,3,5,6,10,15,30
As you can see, the great common factors of 18 and 30 is 6.
So divide 18 by 6 and 30 by 6, and you get 3 and 5
Therefore, the simplest form is 3/5
Place value helps you divide because it helps you to know where to put the numbers
