Упражнение 2. Раскройте скобки, употребляя глаголы в форме Present Simple или Present Continuous.
1. Her father (not to watch) TV at the moment. He (to sleep) because he (to be) tired.
2. Where your uncle (to work)? – He (to work) at school.
3. Your friend (to do) his homework now?
4. When you usually (to come) home from school? – I (to come) at four o’clock.
5. My sister (not to play) the piano now. She (to play) the piano in the evening.
6. You (to read) a magazine and (to think) about your holiday at the moment?
7. I (to sit) in the waiting room at the dentist’s now.
8. When you (to listen) to the news on the radio?
9. You (to play) chess now?
10. My father (not to work) at the shop.
11. Look at the sky: the clouds (to move) slowly, the sun (to appear) from behind the clouds, it (to get) warmer.
12. I (not to drink) coffee in the evening. I (to drink) coffee in the morning.
13. What your friend (to do) now? She (to wash) the dishes.
14. Your grandfather (to work) at this factory
S=184,96см^2
Найти площадь закрашенной
части фигуры.
Пошаговое объяснение:
Дано:
d=16см
Р□=16см
п=~3,14
S=?
1.
Находим длину стороны квад
рата ( обозначим ее "а"):
а=Р□ : 4
а=16:4=4(см) сторона квадрата.
2.
Вычислим площадь квадрата:
S□=a×a
S□=4×4=16(см^2) площадь квад
рата.
3.
Радиус круга составляет поло
вину его диаметра:
d - диаметр;
R - радиус.
R=d/2
R=16:2=8(см)
Находим площадь круга:
S○= пR^2
S○=3,14×8^2=3,14×64=
=200,96(см^2)
4.
Находим площадь искомой
фигуры:
S= S○ - S□
S=200,96-16=184,96(см^2)
S=184,96см^2.