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sidatun77
@sidatun77
July 2022
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помогите срочно! геометрия!
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vpvrest
СО=СО₁*соs 60=8*1/2=4
OO₁=CO₁*sin 60=8√3/2=4√3
V=π*CO²*OO₁=π*4²*4√3=64√3π
2) CO=OE=1/2CD
CD=DE/sin 60=30*2/√3=60√3/3=20√3 ⇒ OE=10√3
OO₁=OE/tg 30=10√3/1/√3=10*3=30
V=π*OE²*OO₁=π*100*3*30=9000π
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Answers & Comments
OO₁=CO₁*sin 60=8√3/2=4√3
V=π*CO²*OO₁=π*4²*4√3=64√3π
2) CO=OE=1/2CD
CD=DE/sin 60=30*2/√3=60√3/3=20√3 ⇒ OE=10√3
OO₁=OE/tg 30=10√3/1/√3=10*3=30
V=π*OE²*OO₁=π*100*3*30=9000π