Work in pairs. choose one of situations in the box and write a dialogue. follow the dialogue map to help you. student a 1 ask what's wrong. 2 show surprise/interest. ask another question. 3 say the situation isn't so terrible. 4 cheer your friend up. 5 say something positive. student b answer as question. give more information. disagree with a. respond to a's comment.

a: hey, is everything ok?

b: no, it's not.

a: what happened? something bad?

b: yes, my father had a car crash this morning. he had a surgery an hour ago.

a: cheer up! he'll be okay if he managed to survive until now.

b: no, nothing is sure. next couple of hours will decide whether he'll ever walk again or not.

a: don't worry i'm sure you father will be alright, he's a strong person from what i heard. you'll see he'll be walking and running in no time!

b: thanks.

найдем диагональ основания (с) по теореме пифагора

  с*с=3*3+4*4=25

с=5 см

теперь по той же теореме найдем диагональ (а) параллелепипеда

а*а=5*5+5*5=50

а=5v2 см

v-корень квадратный