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h/l=sin45°
h/1=sin45°
h=sin45°
h=√2/2
r/l=cos45°
r/1=cos45°
r=cos45°
r=√2/2
Pc=πr²+πrl
Pc=π(√2/2)²+π(√2/2)*1=(½π+ π√2/2)=½ π(1+√2) m²
V=⅓πr²*h
V=⅓π(√2/2)²*(√2/2)
V=⅓π(½)*(√2/2)
V=√2/12 π m³