deezy2x
26.11.2019 •
Mathematics
Some geometry problems i need some with!
when a 2-d circle is rotated around a line that it does not touch. what is the name of the resulting figure?
a. cavalieri section
b. torus
c. cross section
d. annulus
a sphere with radius 16 m is cut by a plane though it’s a great circle. what is the best description of the cross section that is shown?
a. a torus
b. a circle was radius 16 m
c. a circle with radius 8 m
d. a sphere with radius 8 m
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Ответ:
When a 2-D circle is rotated around a line that it does not touch. What is the name of the resulting figure?
The answer is annulus
A sphere with radius 16 m is cut by a plane though it’s a great circle. What is the best description of the cross section that is shown?
B. A circle with radius 16 m
Ответ:
x = (y-4) ^ 2 + 27
We rewrite the expression:
x = (y ^ 2-8y + 16) +27
x = y ^ 2-8y + 43
The standard parabola equation for this case is given by:
x = y ^ 2-8y + 43
option C