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Lê Hoa
4 tháng trước

Làm sao để làm tròn ạ! 30.tan350⁰+1,7 xấp xỉ 22,7m( yêu cầu làm tròn đến đề- xi- mét).

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hoang1o1o1
4 tháng trước

Đáp án+Giải thích các bước giải:

$30m=300dm\\ 1,7m=17dm\\ (30.\tan35^\circ+1,7) (m)=(300.\tan35^\circ+17) (dm)\approx 227 (dm).$

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