bskyeb14579
12.04.2020 •
Mathematics
Please help
I will mark brainliest
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Ответ:
r=4
Step-by-step explanation:
2pi*r=8 pi
2r=8
r=8/2
r=4
Ответ:
4x + 72 + 2x - 12 = 180
6x + 60 = 180
6x = 180 -60
6x = 120
x = 120/6
x = 20