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15cm bạn àh 1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
dien tch tu giac la :
48:3=16 (cm2)
dap so 16 cm2
dung 99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999999900000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
15 là đúng đấy
help me
I can't
ba noi cha may vo duyen qua
15cm bạn àh 100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000%
nham 15 m
Giải chi tiết đi.
Ai chả biết là 15 cm2
S QCB là : 48:4=12.Vì đáy QCB bằng 1/4 đáy ABC
S ABQ là : 48-12=36 cm2
S MBQ là : 36:4=9 cm2 .Vì đáy cũng bằng 1/4 đáy ABC
S AMQ là : 36-9=27 cm2
S MNQ là : 27:3=9 cm2 .Vì đáy của MNQ bằng 1/3 đáy của AMQ
S AMQ là : 27-9=18 cm2
S MPQ là : 18:3=6 cm2 .Vì đáy cũng bằng 1/3
Vậy S MNPQ là : 9+6=15 cm2 { có hình ảnh ở dưới }
15 cm2