98 дм = 9 м 8 дм
32 дм = 3 м 20 см
65 дм = 6 м 50 см
70 дм = 7 м
5 м = 50 дм
60 дм = 6 м
<span>49*362+51*362=362(49+51)=362*100=36200
658*29-657*29=29(658-657)=29*1=29
394*268+394*232=394(268+232)=394*500=
=500*(400-6)=500*400-500*6=200000-3000=197000
64*258-64*39-64*19=64(258-39-19)=64*(258-(39+19))=64*200=12800
!!!!!!!
</span>
Tg(16π/3)=tg(5*π/3)=tg(π/3)=√3.
Ответ: √3.