A cylinder is made of metal having thickness 2 cm.The outer diameter of the cylinder is 14 cm and height of the cylinder is 14cm. find the capacity of cylinder and also volume of the metal used.
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outer diameter(D)=14 cm
outer radius(R)=7cm
inner radius(r)=7-2=5cm. (outer-radius)
outer height(H)=14 cm (given)
inner height (h)=12 cm
capacity=πr×r×h=22/7×5×5×12=942.85
volume of metal=πR×R×H - πr×r×h =22/7×7×7×14-942.85=2156-942.85=1213.15= Ans.
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