Mathematics

Problem

Three pieces of an iron rod measure

9\,\text{cm},\;40\,\text{cm}

and

41\,\text{cm}

. Do these lengths form a right triangle? a) Yes, right angle opposite the

41\,\text{cm}

piece b) Yes, right angle opposite the

40\,\text{cm}

piece c) No, because

9^{2}+40^{2}<41^{2}

d) No, because

9+40<41