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Nguyễn Hoàng Khôi Nguyên
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2022-05-18 20:01:29
( x + 12,6 ) : 3,5 = 11,2
x + 12,6 = 11,2 3,5
x + 12,6 = 39,2
x = 39,2 - 12,6
x = 26,6
2022-05-18 20:01:04
318,843
2022-05-14 13:44:06
Tổng hai đáy là:
5 x 2 = 10 ( cm )
Diện tích hình thang là:
10 x 3,2 : 2 = 16 ( m2
2022-05-14 13:42:56