Вычислите площадь боковой поверхности конуса, образующая которого равна 8 см, а радиус основания - 10 см.

При сжигании 21 г вещества,состоящего из углерода и водорода,образовалось 66 г СО2 и некоторое количество воды. Плотность вещества по воздуху равна 2,9 (в парообразном состоянии).Вывести формулу соединения.

Помогите пожалуйста)

The News on TV

Do you watch the news on TV? 

B4 Before television, people often ____________ to the cinema to watch the news. GO

B5 In those days, they ___________ also listen to the news on the radio CAN

But they weren’t able to see anything. 

B6 Of course, newspapers ___________ people the news for GIVE

hundreds of years.

B7 Even today, however, a daily newspaper gives ___________ readers IT

yesterday’s news and the only pictures are photographs.

B8 The introduction of television ____________ the daily news, with BRING

moving pictures, into people’s homes for the first time.

B9 In the beginning, people _____________ the news on TV whenever NOT GET

they wanted it, because it was only broadcast at certain times of day.

B10 These days, there are a number of TV news channels _____________ PROVIDE

the news 24 hours a day.

B11 If you want the ___________ news, just turn on one of those channels LATE

at any time of day or night.