Sculpt Big or Sculpt Small ? The Problem
: A
sculptor has the moulds to cast similar solid bronze figures of height either 20
cm or 40 cm. She can sell these figures for �30 and �150 respectively. If her
main cost is the cost of the bronze, which size figure is it more profitable for
her to make ? What
difference might it make to your advice if the figures were hollow ? The
Investigation : If
2 such hollow figures were made, in the unlikely � but simple ! � forms of
cubes 20 cm and 40
cm high,
out of 1 cm thick bronze, then how much bronze would be required in each case,
and what would be the relevant ratio ? What
advice would you give the sculptor ? What difference would it make to your advice if the
figures were still cast in 1 cm thick bronze, but were only
4 cm and 8 cm high ?
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