A metal cylinder disc is 3 cm thick and its diameter is 14 cm. Find its volume and total surface area.
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Answer:
Given, radius 14 cm, thickness =3 cm, number of plates =30
Therefore, height of cylinder will be 3×30=90 cm
We know, total surface area of cylinder =2πr(r+h) cm
2
Therefore, total surface area =2π(14)(14+(90))=9152 cm
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