Answer:
Therefore, the volume of the cone is V=4π.
Step-by-step explanation:
From task we have a circular cone with radius 2 m and height 3 m. We use the disk method to find the volume of this cone.
We have the formula:
We know that r=2 and h=3, and we get:
8=m+7
m=1
so
y=x+7
that is the equasion
2
From the graph, we obtain the trigonometric function as:
The corresponding cosine function have equation.
This function is of the form:
where is the amplitude.
Therefore the amplitude is |2|=2
The third choice is correct
B
90/3=30
V=πr2h
3=π·72·9
3≈461.81412
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