Question

tren mat ban hinh chu nhat co chieu dai 1,5m,chieu rong bang 2/3 chieu dai,nguoi ta trai mot cai khan trai ban hinh thoi co hai duong cheo lan luot bang chieu dai va chieu rong mat ban.tinh dien tich cai khan trai ban va dien tich mat ban.mong cac ban giup minh

Answer 1

Chieu rong cua cai mat ban do la

1.5:3×2=1m2

Dien h mat ban do la 

1.5×1=1.5m2

Dien h hinh thoi do la 

1.5×1:2=0.75m2

Thay dung thi k minh nah