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2022-05-08 22:14:29
3,9×y+y×5=26,7
y x (3,9 + 5) = 26,7
y x 8,9 = 26,7
y = 26,7 : 8,9
y = 3
Vậy y = 3
2022-05-08 22:05:45
Nửa chu vi mảnh vườn là:
150 : 2 = 75 (m)
Tổng số phần bằng nhau là:
3 + 2 = 5 (phần)
Chiều rộng mảnh vườn là:
75 : 5 x 2 = 30 (m)
Chiều dài mảnh vườn là:
75 - 30 = 45 (m)
Diện tích thửa ruộng hình chữ nhật là:
30 x 45 = 1350 (m2)
Diện tích mảnh vườn không kể lối đi là
(30 – 2)x(45 – 2) = 1204 (m2)
Diện tích con đường là
1350 – 1204 = 146 (m2)
Đáp số: 146 m2
2022-03-31 20:37:34
2022-03-31 20:37:34
2022-03-31 20:37:34
2022-03-31 20:37:34
2022-03-31 20:37:34
2022-03-31 20:37:34
2022-03-31 20:37:34
2022-03-31 20:37:34