Точки О, F и Т лежат соответственно на сторонах АВ, ВС и АС треугольника АВС так, что OF || АС и ОТ || ВС. Найдите площадь треугольника АВС, если S 0BF = S1, SAОТ = S2.

1 - What type of economy does the Great Britain have?
2 - What is GNP?
3 - What does government policies include nowdays?
4 - What does the government control?
5 - How much percent of the GNP does agriculture account for?
6 - Is the United Kingdom agriculturaly self-sufficient?
7 - How much persent of the GNP does the mineral industry account for?
8 - When was the single graduated income tax introduced?
9 - What are the chief imports of Great Britain?
10 - How much of the total population is in the labour force in Great Brotain?