Posted by Anonymous on Thursday, October 14, 2010 at 11:38am.
Metal discs for pet collars have a diameter of 4cm. Each disc is 0.1cm thick. How many discs can be made from 1000cm3 of metal?

math  Reiny, Thursday, October 14, 2010 at 11:53am
I don't like this question.
There is simple purely mathematical solution
volume of 1 disc = π(2^2)(.1) = .4π cm^3
so number of discs = 1000/(.4π) or 795.8
so they can make 795 discs
Logistically, this is a very ambiguous question
 is the 1000 cm^3 in a block of metal or in sheets?
 are the discs manufactured by pouring liquid metal into a mould ?
 are they stamped ? If so, is the scrap metal used again?
 arhhh! ....
Answer This Question
Related Questions
 Probability  A bag contains 5 white discs and 5 black discs. Two players draw ...
 Math (Probability)  Hassan has a bag which contains 20 coloured discs. He ...
 Math  A bag contains 8 white, 6 black and 4 red discs. They are selected at ...
 Physics  A pendulum is made of two discs, one with mass M and radius R and the ...
 Math  There are 40 students. THere are 6 who only like tape , 10 who like both ...
 Biomechanics  An 88.9 kg weight lifter is required to perform a snatch movement...
 Maths  A hollow spherical metal ball has internal radius 1cm. If the metal is 1...
 math  6cm diameter discs are cut from a sheet 130cm long and 70cm wide.(a)How ...
 Mathematics  A cylindrical tube, open at both ends, is made of metal. The ...
 physics  A cylindrical tube open at both ends is made of metal. The internal ...
More Related Questions