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kiemphu14
2 năm trước
a) Một mảnh vườn hình chữ nhật có chu vi 30cm, chiều dài gấp 4 lần chiều rộng. Tính diện tích mảnh vườn. b) Một mảnh vườn hình chữ nhật có chu vi 246cm, chiều dài gấp đôi chiều rộng. Tính diện tích. Giúp mình đi có tóm tắt nhé
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