Các câu hỏi tương tự
Mot nen nha hinh chu nhat co chu vi la 60m, chieu rong bang 2/3 chieu dai, nguoi ta lat nen bang nhung vien gach hinh vuong canh 2dm.hoi can bao nhieu gach de lat kin nen nha do
1 nen nha hinh chu nhat co chieu dai 9m chieu rong 6m hoi can bao nhieu vien gach men hinh vuong canh 30cm de lat kin nen nha do
nen cua mot hoi truong hinh chu nhat co chieu dai hon chieu rong 8m va chieu rong bang 3/5 chieu dai nguoi ta lat nen hoi truong do bang gach men moi met vuong gach gia 350 000 dong hoi can bao nhieu tien de mua gach men de lat kin nen hoi truong do
mot nen nha hinh chu nhat co tong do dai hai canh lien tiep la 11m chieu rong kem chieu dai 3m
a) tinh dien tich nen nha
b) nguoi ta lat nha bang gach n]men hinh vuong canh 40 cm hoi phai dung bao nhieu vien gach de lat kin nen nha ( coi manh vua la ko dang ke )
nen cu amot hoi truong hinh chu nhat co chieu dai hon chieu rong 8m va chieu rong bang 3/5 chieu dai.nguoi ta lat nen hoi truong do bang gach men , moi mat vuong gach gia tri 350000 dong. hoi can bao nhieu tien mua gach de lat kin nen hoi phong
mot can phong hinh chu nhat co chieu dai la 12m, chieu rong bang 1\4 chieu dai. trong can phong do nguoi ta lat gach vuong canh 1\5 m. Hoi can bao nhieu vien gach de lat ?
bai 7 : 1 nen nha hinh chu nhat co tong do dai hai canh lien tiep la 11 m, chieu rong kem chieu dai 3 m . Hoi
a)tinh dien tich nen nha
b) nguoi ta lat bang gach men hinh vuong canh la 40 cm. Hoi phai dung bao nhieu vien gach de lat kin nen nha ( coi mach vua la khong dang ke)
De lat nen mot lop hoc hinh chu nhat nguoi ta dung cac vien gach bong hinh vuong co canh dai 20 cm. Biet chu vi nen la 36m , chieu dai hon chieu rong 4 m . Tinh so gach bong can dung de lat nen (coi dien tich mach vua la khong dang ke)