Răspuns:
Explicație pas cu pas:
V=πR²h/3=334π ⇒R²h=3×334
R/1,5=h/2 R/3=h/4 h=4R/3 4R³=9×334 R³=751,5 cu aproximatie R≅9 h=4×9/3=12
Al=πRh=π9×12=108π
At=πR(R+h)=π9(9+12)=π9×21=189π
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Răspuns:
Explicație pas cu pas:
V=πR²h/3=334π ⇒R²h=3×334
R/1,5=h/2 R/3=h/4 h=4R/3 4R³=9×334 R³=751,5 cu aproximatie R≅9 h=4×9/3=12
Al=πRh=π9×12=108π
At=πR(R+h)=π9(9+12)=π9×21=189π