Question

50 circular plates of radius 10.5cm and thickness 1.6cm are placed one above another to form a solid circular cylinder. Find the CSA and Volume of cylinder thus formed

Answer 1

I hope this helps......
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Answer 2

height of the cylinder = 1.6cm multiplied by 50 which is equal to 80cm
volume is 22/7 multiplied by 10.5 ² multiplid by 80 whuch is equal to 12600cm³
csa is equal to 2 multiplied by 22/7 mutliplied by 10.5 multiplied by 80 which is equal to 5340²