5đề - xi -met khoi 36 xang ti met khoi bang bao nhieu cm khoi
de lat san 1 can phong nguoi ta dung het 150 manh go hinh chu nhat co chieu dai 80 cm chieu rong 25 cm hoi can phong do co dien tich bang bao nhieu met vuong
nam sau met 2chin cm bang bao nhieu dm
Mot san bong duoc ve tren ban do ti le 1:1000 la mot hinh chu nhat co chieu dai 11 cm,chieu rong 9 cm.Hoi:
A)Chu vi san bong bang bao nhieu met?
B)Dien tich san bong bang bao nhieu met vuong?
1 Hinh hop chu nhat co chieu dai 1m 5 cm chieu rong bang 80 phan tram chieu dai chieu cao bang 75 phan tram chieu rong hoi doen tich toan phan cua hinh hop do a bao nhieu met vuong
2 hinh hop chu nhatvco chieu dai 25 cm chieu cao 18 cm chu vi mat day 80 cm tinh dien tich toan phan cua hin do
mot hinh chu nhat co chieu rong bang 36 cm chieu rong bang 3/5 chieu dai duoc uon tu mot soi day thep .hoi soi day thep do dai bao nhieu met
giai giup minh luon nhe minh hua ticj that nhieu nhieu nhieu luon
dien tich tam bang hinh chu nhat la 3.575 m vuong co chieu rong tam bang la 130 cm . Nguoi ta muon lep xung quanh tam bang do bang khung nhom hoi khung nhom do dai bao nhieu met
Môt hinh chu nhat co chieu rinh bang 36 cm ,chieu rong bang 3/5 chieu dai duoc uon tu mot soi day thep . Hoi soi day thep do dai bao nhieu met
tren bang do 1 :5000 chieu dai san truong do duoc 3 cm hoi chieu dai thuc cua san truong do dai bao nhieu met