Describe how you could use your height and a yardstick to determine the unknown height of a flagpole.

This works when it is not close to noon

put the yardstick next to the pole

measure the shadow of the pole, call it x

measure the letngh of the shadow of the yardstick

measure the height of the yardstick

the ratio of the height of the yardstick to the shadow of the yardstick should be close to the ratio of the height of the pole to the legnth of the shadow of the pole