Find the circumstances of a circle of the radius 15 CM

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Find the circumstances of a circle of the radius 15 CM

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Vân Khánh 3 years 2021-07-23T19:21:54+00:00 1 Answers 8 views 0

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    2021-07-23T19:23:14+00:00

    94.2 cm (pi rounded to 3.14)

    15 x 2 = 30

    30 x 3.14 = 94.2

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )