Would you like to stay with a host family? What difficulties might you face? In three minutes write a few sentences on the topic. Read your sentences to your partner.

1)V=1/3Sh
S=1/2 *25*sin60
V=1/3*1/2*25**10=125/6

2) V=1/3S*h
S=
r=3 
h=
V=1/3**9*=

3)

V=4/3=36

4/3r^3=36
r^3=27
r=3