A firefighter sees a woman trapped in a building 15 feet up from the bottom floor. The firetruck is parked 35 feet away from the
2 answers:
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Hi,
A)
B)
Only if n=4*k or n=4*k+1 , k beeing an integer.
A)
B)
Only if n=4*k or n=4*k+1 , k beeing an integer.
Answer:
Step-by-step explanation:
Radius = r units
Height = 2r
Volume of cone = (1/3)πr²h
The center of the circle lies on the x-axis
The radius of the circle is 3 units.
The radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.
<h3>How to determine the statements</h3>
The standard equation of a circle is expressed as:
Where
- Centre is (-g, -f)
- radius = √g²+f²-C
Given a circle whose equation is
Let's get the center of the circle
2gx = -2x
2g = -2
We have that;
g = -1
Similarly, 2fy = 0
given that
f = 0
Centre = (-(-1), 0) = (1, 0)
This explains that the center of the circle lies on the x-axis
We move further to the radius
r = radius = √g²+f²-C
radius = √1²+0²-(-8)
radius =√9
= 3 units
The radius of the circle is 3 units.
For the circle x² + y² = 9, the radius is expressed as:
r² = 9
r = 3 units
Hence the radius of this circle is the same as the radius of the circle whose equation is x² + y² = 9.
Learn more about circles here:
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