for cylinder we should consider the volume rather area.. volume of the sma

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

Question Posted / debashish dash

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Answer Posted / 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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