a question about the tree
If the lowest branch of a tree is 5 feet off the ground,and the tree grows 2 feet per year in height,how far away will that branch be off the ground 3 years later?
Why?
人气：160 ℃ 时间：2020-05-09 20:38:46
解答
still 5 feet
because the location of the branch can not change.
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