elizabethseoane6321
30.03.2021 •
Mathematics
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Ответ:
it's π 11²-π 3²
π(121-9)
3.14(112)
=351.68cm²
round off yourself (╥﹏╥)
Ответ:
U30 = 2 + (30-1)5
U30 = 2 + 29(5)
U30 = 2 + 145 = 147 (b)