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2022-04-16 09:30:20
98656+6254= 104 910
2022-04-16 09:27:50
độ dài thực là
10000 x 1 =10000 ( cm )
đáp số 10000 cm
2022-04-16 09:24:00
nửa chu vi hcn là
72:2= 36
tống cs phần bằng nhau là
4+5=9 ( phần )
chiều dài mảnh vườn HCN là
36:9 x 5= 20 (m)
chiều rộng mảnh vườn HCN là
36:9 x 4 = 16 ( m )
diện tích mảnh vườn HCN là
16 x 20 = 320 ( m2)
đáp số : 320 m2