What is the maximum number of pieces 1 cm in diameter and
20cm long that can be cut out of a cylindrical wooden block
20cm in length and 3cm in diameter ?
(a) 4
(b) 5
(c) 6
(d) 7
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Answer / debashish dash
for cylinder we should consider the volume rather area..
volume of the small pieces ( uniqely) is 3.14*(.5)^2*20
volume of the large piece is 3.14*(1.5)^2*20
hence he no. of small pieces required will be ...
1.5^2 / 0.5^2 = 2.25/.5 = 9
answer is 9
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