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.

sasha1027821 sasha1027821    1   17.04.2019 04:10    4

Ответы
MariyKot MariyKot  04.06.2020 06:30
1)V=1/3Sh
S=1/2 *25*sin60
V=1/3*1/2*25*\sqrt{3} /2*10=125\sqrt{3}/6

2) V=1/3S*h
S=\pi r^{2}
r=3 
h=\sqrt{27} =3 \sqrt{3}
V=1/3*\pi*9*3 \sqrt{3}=9\sqrt{3} \pi

3)

V=4/3\pi r^{3}=36\pi

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