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Geo777
26.07.2019 •
Mathematics
Awooden disk is shaped like a cylinder with a radius of 20.2 millimeters, and a height of 3.9 millimeters. what is the surface area of the wooden disk to thenearest whole millimeter?
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Ответ:
Ответ:
x = 19
Step-by-step explanation:
The angles of a triangle add to 180
U and S are equal since they are the base angles and UT and ST are equal
S + T + U = 180
x + 26 + 90 + x+26 = 180
Combine like terms
2x +142 = 180
Subtract 142 from each side
2x = 38
Divide each side by 2
2x/2 = 38/2
x = 19