Як розмістити 16 учнів у три ряди,щоб у кожному ряді їх було порівну?

Противоположные стороны четырехугольника АВСD попарно параллельны. Найдите величины углов и длины сторон этого четырехугольника, если  угол А=30 градусов, АВ= 2 см, ВС=4 см. 

Произведение двух чисел равно 10 ,а их сумма составляет 70 процентов от произведения.Найдите эти числа.

разбор слова по составу ГЕРБАРИЙ

Помогите перевести текст.(без помощи гугла) Look at the picture of Tornado coming.Tornado is a violent storm with very strong circular winds over a small area/A tornado is about to strike this family`s farm.They are all frightened.

It is moving quickly towards them,but they have already noticed that it is coming.The mother has taken  the baby,the father has called the children.The boys are carrying some of th animals:a cat and 3 puppies.The family is rushing to the storm cellar,where they will be safe under the ground.When the tornado hits,they`ll be sitting in the storm cellar.They  won`t be moving around;they`ll be hiding in the safest part of the cellar. The mother will still be hoding the baby,but the animals will probably be running around,making noise.Each person will be listening to the sounds of the storm.They`ll hear chickens squaking and they`ll hear the wind blowing.They`ll all be thinking about the farm and asking themselves questions about it:

"What will the farm look like when we come out of the storm cellar?" "Will the house still be standing?" "Will all the animals be alive?" " Will it be raining very hard?" " will the family survive?"

Can you answer these questions? What do you think of the family?