боковое ребро правильной треугольной пирамиды наклонено к плоскости основания под углом 60 градусов. объем пирамиды равен 48. найти площадь боковой поверхности пирамиды
1.danced, opened, took , rained, had , washed, did ,watched ,cleaned ,went, made , was , got ,lived , wrote
2.we didn't go to Moscow last summer.
the children didn't have dinner at 2o'clock yesterday.
they didn't watch film last week/
I didn't get up at 8 o'clock yesterday.
it didn't rain two days ago
Ann didn't live in S.Petersburg last year/
She didn't read an untersting book the day before yesterday.
I didn't my homework after school yesterday.
3.where the children play in the garden yesterday?
did Tom write a latter three days ago&
What father cook dinneh yesterday&
Who mother go to work by bus yesterday?
When we have a bath the day before yesterday?
Why Nick come home in the aafternoon?
What grandmother make tea in the morning?
4.1 We didn't have lunch at 1o'clock yesterday.Did we have lunch at 1o'clock yesterday? where we have lunch at 1 o'clock yesterday? Who have lunch at 1 o'clock yesterday?
4.2 It didn't show last week.Did it show last week? Where it show last week? Who ishow last week?
Нужно делить на СООТВЕТСТВУЮЩУЮ сторону треугольника. Если дано, что треугольники АВС и ОРТ, подобны, то вначале надо определить какие стороны являются соответствующими (и то же самое с углами: соответствующие углы у подобных треугольников равны). Как правило в учебниках, при записи подобных треугольников соответствие определяется по положению буквы в записи треугольника. Хотя, в новых учебниках это явно не сказано. Например, если сказано, что треугольники АВС и ОРТ подобны, то подразумевается, что угол А равен углу О, угол В равен Р, и С равен Т. И тогда стороне АВ соответствует сторона ОР, стороне ВС соответствует РТ и стороне АС соответствует OТ. Т.е. при такой записи, будет AB/OP=BC/PT=AC/OT. И в вашей задаче, если AB=8, то чтобы определить коэффициент подобия, надо знать длину именно ОР. И если сказано, что она 4, то да, треугольник ABC подобен треугольнику ОРТ с коэффициентом подобия 2.
1.danced, opened, took , rained, had , washed, did ,watched ,cleaned ,went, made , was , got ,lived , wrote
2.we didn't go to Moscow last summer.
the children didn't have dinner at 2o'clock yesterday.
they didn't watch film last week/
I didn't get up at 8 o'clock yesterday.
it didn't rain two days ago
Ann didn't live in S.Petersburg last year/
She didn't read an untersting book the day before yesterday.
I didn't my homework after school yesterday.
3.where the children play in the garden yesterday?
did Tom write a latter three days ago&
What father cook dinneh yesterday&
Who mother go to work by bus yesterday?
When we have a bath the day before yesterday?
Why Nick come home in the aafternoon?
What grandmother make tea in the morning?
4.1 We didn't have lunch at 1o'clock yesterday.Did we have lunch at 1o'clock yesterday? where we have lunch at 1 o'clock yesterday? Who have lunch at 1 o'clock yesterday?
4.2 It didn't show last week.Did it show last week? Where it show last week? Who ishow last week?
5/1 I halped the mom yesterday.
5/2 where you live last month?
5/3 Did they wake up at 7 am ?
5/4 We didn't go to school yesterday
5/5Who watch the TV on Sunday ?