忽忽.如下图.
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忽忽.如下图.忽忽.如下图.忽忽.如下图.4.Assumetheheightoftheflagpoleish.h/5=14/3.5h=20(feet)sotheheightoftheflagpolei
忽忽.如下图.
忽忽.
如下图.
忽忽.如下图.
4.Assume the height of the flagpole is h.
h/5 = 14/3.5
h = 20(feet)
so the height of the flagpole is 20 feet.
5.Because the ratio of the corresponding sides of the two rectangle is 1/(3/4) = 4/3
so the ratio of the areas of two regtangle is 4/3 X 4/3 = 16/9