Problem Pictures
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PP1 CD-ROM cover

This picture is taken from the Problem Pictures CD-ROM of photographs with activities for mathematics teaching.

Park railings

The horizontal bar in the photograph has holes spaced 10 cm apart for the hoops to pass through. One hoop is 30 cm wide.

How many hoops would you need to make a railing that is 250 cm long?

Can you find a rule that gives the length of railing for any given number of hoops?


The photographs and screen images on this website are copyright and may not be reproduced without permission. Copyright Richard Phillips 2001/2008. Page updated 27 November 2008.