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50 circular plates each of radius 7cm & thickness 0.5cm are placed one above the other to form a circular cylinder .find T.S.A

Posted by Shekhar Singh 7 years, 10 months ago

CBSE > Class 09 > Mathematics

1 answers

Rajeshwari Gouda 7 years, 10 months ago

Thickness of plates=0.5 Height of circular cylinder=50x0.5 =25cm Radius=7cm T.S.A=2πr(r+h) =2*22/7*7(7+25) =2*22*32 =one thousand four hundred and eight

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CBSE > Class 09 > Mathematics