Answer:
TSA of cylinder= 2πrh+2πr²
(2*3.14*40*10.5)+(2*3.14*10.5*10.5)
= 2,638.93+692.72
= 3,331.66
Volume= πr²h
= 3.14*10.5*10.5*40
= 13,854.42
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