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soojoonlee693
2 năm trước
. Một khu vườn hình chữ nhật có chiều dài x (m), chiều rộng y (m). Người ta mở một lối đi rộng 1,5 m xung quanh khu vườn (lối đi nằm trong khu vườn). a) Hỏi chiều dài, chiều rộng khu đất còn lại để trồng trọt là bao nhiêu (m)? b) Tính diện tích khu đất trồng trọt biết x=12m, y= 10m.
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