p la chu vi, a la chieu rong, b la chieu dai
ta co
P=2(a+b)=2a+2b
ma theo de bai P=8a
=>8a=2a+2b
=>8a-2a=2b
=>6a=2b
=>3a=b(chia 2 cho moi ve)
vay chieu dai gap 3 lan chieu rong
Mot hinh chu nhat co chu vi gap 8 lan chieu rong . Hoi chieu dai gap may lan chieu rong ?
giai giup minh nha chieu nay minh can gap
mot hinh chu nhat co chieu dai45m chu vi hinh chu nhat la 108 m hoi hinh chu nhat co chieu dai gap may lan chieu rong
mot hinh chu nhat co chieu rong =8mchieu rong=9m Hoi phai keo dai moi chieu them cung 1 doan de duoc mot hinh chu nhat moi co chu vi gap 6 lan chieu rong
mot hinh chu nhat co chu vi gap 8 lan chieu rong . Chieu dai hon chieu rong 18 dm .Tinh chu vi va dien tich hinh chu nhat do ??????????
MOT HINH CHU NHAT CO CHIEU DAI > CHIEU RONG 3DM NEU GAP 4 LAN CHIEU DAI THI CHIEU DAI>CHIEU RONG 24DM TINH CHU VI HINH CHU NHAT BAN DAU ?
mot hinh chu nhat co chu vi bang 1522200000000cm chieu dai gap 4 lan chieu rong hoi dien tich hinh chu nhat bang..............cm
Mot hinh chu nhat co dien tich la 64 m chieu dai gap 8 Lan chieu rong. Hoi chieu Dai,rong bang? m
Hinh chu nhat co chu vi gap 16 lan chieu rong .Chieu dai hon chieu rong 80 m .Tinh dien tch hinh chu nhat do ?
Mot hinh chu nhat chu vi gap tam lan so do chieu rong chieu dai hon chieu rong 18dm tinh chu vi va dien tich hinh chu nhat do?
