: For example, you could take the barometer out on a sunny day and : measure the height of the barometer, the length of its shadow, and the : length of the shadow of the building, and by the use of simple proportion, : determine the height of the building.
(you; could take out; T:on a sunny day) (you; measure; the height of the barometer)
you you
could take out measure
T:on a sunny day
the height of the barometer