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lanhdhsptn
2 năm trước
giúp mình nhanh với, mình cần gấp lắm ạ, cảm ơn nhiều Một vườn hoa hình chữ nhật có diện tích 4800m2 . Người ta lấy đất vườn làm lối đi xung quanh rộng 3m. Phần còn lại của mảnh vườn cũng là hình chữ nhật có chu vi 256m , có diện tích là?
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