The volume of a cone varies jointly with the area of the base and the height. When the area of the base is 27 cm2 and the height is 6 cm, the volume is 54 cm3. Therefore, the area of the base is _ cm^2 when the height is 12 cm and the volume is 124 cm^3.
1 answer:
Cone=cup: V=124<span>cm^3. h=12cm V=Bh P=r</span>^2π+rsπ: B=r^2π B=V/h=124/12=10,3cm^2 r^2=B/π r=√(B/π)=1,81 cm S=√(r^2+h^2)=√(12^2+1.81^2)=√(144+3,28)=12,13 cm P=r^2π+rSπ=3,28*3,14+1,81*12,13*3,14=10,29+68,93=79,22 cm^2
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Step-by-step explanation:
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