the radius of a sphere is 3 inches. which represents the volume of the sphere? 12π cubic inches 36π cubic inches 64π cubic inche
2 answers:
Keywords:
<em>Volume, sphere, radio </em>
For this case we must find the volume of a sphere, which has a radius of 3 inches. To do this, we must bear in mind that, by definition, the volume of a sphere is given by:
, where "r" represents the radius of the sphere.
So, substituting, we have:
Thus, the volume of the sphere is cubic inches
Answer:
The volume of the sphere is cubic inches
Option B
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Answer:
Vertex = (-4,-5)
P-value = -2
Opens Downward
Step-by-step explanation:
Given:
- Focus = (-4,-7)
- Directrix = -3
Since focus is less than directrix, the parabola obviously opens downward.
To find vertex (h,k), for downward parabola, focus is (h, k + p) and directrix is y = k - p
We have:
First equation being focus and second being directrix, solve the simultaneous equation:
Substitute k = -5 in any equation - I’ll choose (1) for this:
Therefore vertex is at (h,k) = (-4,-5) with p-value being -2 since p < 0 then the parabola opens downward.
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