Trường Toán Online MATHX
Khi xếp 3 tờ giấy gấp Origami hình vuông có độ lớn khác nhau bên cạnh nhau, ta sẽ được hình như trên. Chiều dài một cạnh hình của hình vuông ở giữa là bao nhiêu cm?
Đáp án: 8 cm
Chiều dài 4 cạnh của hình vuông bằng nhau nên nếu ta dựng cạnh của hai hình vuônng ở bên trái và bên phải lên như hình vẽ thì tổng chiều dài của đường gạch đậm vẫn là 17 cm.
Chiều dài 3 cạnh của hình vuông ở chính giữa theo như hình vẽ có thể tính được bằng: 4 + 17 + 3 = 24 (cm)<!--[if gte mso 9]><xml>
Có nghĩa là, chiều dài 1 cạnh sẽ bằng: 24 : 3 = 8 (cm)<!--[if gte mso 9]><xml>
thưa thầy 4+4 =8 ạ
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đáp án đâu thầy
em thưa thầy là 8 ạ
bằng 8 thầy ạ quá dễ luân
thưa thầy là 8 ạ
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em thưa thầy bằng 8 bằng 8 bằng 8 bằng 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888 888 88888888888888888888888888888 88888888888888888888888888888 88888888888888888888888888888
Em là 8cm thầy ạ
Thua thay bang 8cm a
8 dễ. [ cười đen tối ]
câu trả lời của em là 8cm thầy ạ
gọi độ dài cạnh của hình vuông ở giữa là x (cm) (x>0) độ dài cạnh của hình vuông bên trái nhỏ hơn hình vuông giữa 4cm ->độ dài cạnh hình vuông bên trái là : x-4 (cm) độ dài cạnh hình vuông bên phải nhỏ hơn hình vuông giữa 3cm -> độ dài cạnh hình vuông bên phải là : x-3 (cm) theo bài ra ta có phương trình : x+(x-4)+(x-3)=17 <-> x+x-4+x-3 =17 <-> x+x+x =17+4+3 <-> 3x =24 <-> x =8 vậy độ dài cạnh của hình vuông ở giữa là 8 cm :)
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8 phai ko a
8cm thầy ạ
Ta thấy, hình vuông ở bên trái bằng một nửa hình vuông ở giữa. Cạnh hình vuông ở giữa là: 4+4 = 8 {cm} Đáp số: 8 cm
dap an la 8 a
9 - 1 cm ạ
8cm nha thầy
t á m n h a t h ầ y .
dạ là 8cm thưa thầy
8 cm ạ . . . . . . . .. . . .. . . . . . . . .. . . .. . . . . . . . .. . . . . . . . . . . . . . .. . . . . . . . . . . . . . .>>>>>>......... . . . . . . . . . . . .. . . ..
888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888888 nha
đáp án là 8 thầy ạ
8 cm đúng ko thầy
Theo mik là 8cm[:)]
đáp án siuuuu chính xác là 8
Là 8 cm thầy ạ :))))
dạ là 8 ạ
là 8 cm ạ
đáp án là 8cm ạ
là 8 cm ạ.
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Là 8 cm đúng nhận sai cấm cãi
Thưa thầy là 8cm ạ
9cm thầy ạ!
theo em là 8 cm ạ
theo em la 8cm
theo em la 8 cm
em thua thay la 8cm a em dep trai nen se dung
8cm đúng không thầy ???
da thua thay chieu dai canh hinh vuong o giua la 8cm
là 8 cm ạ
Ta thấy, hình vuông ở bên trái bằng một nửa hình vuông ở giữa. Cạnh hình vuông ở giữa là: 4+4 = 8 {cm} Đáp số: 8 cm
Theo em là 8 cm. Em mong thầy sẽ sớm phản hồi. Em tên là Nguyễn Thảo Vy Lớp 4