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gggg79
24.04.2020 •
Mathematics
What is the degree measure of s?
A) 106°
B) 122°
C) 131°
D) 151°
Solved
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Ответ:
D) 151°
Step-by-step explanation:
First we recall the fact that angles in a triangle add to 180°
So this means that we can find the angle above 's'
61° + 90° + ? = 180°
151° + ? = 180°
? = 29°
So the angles above 's' is 29°
Then we recall the fact that angles on a straight line add to 180°
So this means that
s + 29° = 180°
s = 151°
Ответ:
7. 1583.36 cm³
8. 13,627.18 m³
Step-by-step explanation:
Volume of space consumed by the paper = volume of outer cylinder - volume of center cylinder
✔️Volume of Outer Cylinder:
Volume = πr²h
r = ½(12) = 6 cm
h = 14 cm
Volume = π*6²*14
Volume = 1583.36 cm³
✔️Volume of center cylinder:
Volume = πr²h
r = ½(4) = 2 cm
h = 14 cm
Volume = π*2²*14
Volume = 175.93 cm³
✅Volume of space of the toilet paper = 1583.36 - 175.93 = 1583.36 cm³
8. Volume of the solid = volume of the cone + volume of the cylinder
✔️Volume of the cone = ⅓πr²h:
r = 13 m
h = 14 m
V = ⅓*π*13²*14
V = 2,477.67 m³
✔️Volume of the cylinder = πr²h
r = 13 m
h = 21 m
V = π*13²*21
V = 11,149.51 m³
✅Volume of the solid = 2,477.67 + 11,149.51 = 13,627.18 m³