neu tang , giam thi chu vi ko doi nha
neu tang , giam thi chu vi ko doi nha
Co mot cai san hinh chu nhat ,chu vi la 148m, neu nguoi ta bot di chieu dai cua cai san do thi 4m thi san do tro thanh hinh vuong .Tim chieu dai,chieu rong ban dau cua cai san hinh chu nhat do.
mot hinh chu nnnnnnhhhhhhat co chieu dai la 45 chierong bang 1/5 chieu dai vay dien tich hinh chu nhat la
Mot hinh chu nhat co chieu rong la12 chieu dai la15 hoi nua chu vi la bao nhieu
Biết chiều dai la 100m , chieu dai hon chieu rong 1/2m . Tinh chu vi hinh chu nhat do ?
1 khu dat hinh chu nhat co chieu dai la3 m chieu rong la 2m.tinh chu vi khu dat do
1 hinh chu nhat co chieu dai =2 chieu rong. dien tich = 32 cm2
tinh chu vi?
(mong moi nguoi hay giai chi tiet va dung theo cach lop 2 gium minh nha ! )
mot hinh tam giac co dien tich la 24cm2 . neu keo dai day them 5 cm thi dien tich tang 15 cm2 . tinh do dai day
tinh dien tich hinh chu nht biet chieu dai 3cm chieu rong 4cm
Cho so 305
a)neu chu so hang tram bot di(hay tang them)thi so do giam di hay tang them bao nhieu don vi
b)so do thay doi the nao neu doi chu so 0 va chu so 5 cho nhau?