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SL10355
23.03.2021 •
Mathematics
15. a
16.c
17. e
18.9
19. h
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Ответ:
19 h
Step-by-step explanation:
The angles of A and B are 45 degrees. This is true because the other angle is a right angle (90 degrees) and if you are making a triangle the degrees of the sides have to = 180 to be a complete triangle. The triangle is complete, so I took 180 – 90 = 90 ÷ 2 = 45.
The angle of C is 115 because it is a supplementary angle. A supplementary angle is an angle that has two angles with a sum of 180 degrees and 180 – 65 = 115
Ответ:
C = 2*pi*20 = 3.14*40 = 125.6in
A