naansah52631
09.03.2021 •
Mathematics
Is (-1,2) a solution to the following system of inequalities:
x-y<_-3
x+y>_1
OYes
ONo
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Ответ:
uhm i dont know
Step-by-step explanation:
Ответ:
r=1, h=9
r=2, h=2.25
r=5, h=0.36
r=12, h=0.0625
r=r, h=9/r²
Step-by-step explanation:
Volume of a cone = πr²h/3
3π=πr²h/3
r²h=9
when r=1?
r²h=9
1²h=9
h=9
when r=2?
r²h=9
2²h=9
4h=9
h=2.25
when r=5?
r²h=9
5²h=9
25h=9
h=0.36
when r=12?
r²h=9
12²h=9
144h=9
h=0.0625
when r=r?
r²h=9
h=9/r²