Exercise 8c

Measuring a fence is slightly different because there are spaces between the strips of wood.
(We won't worry about the fact that there will be an extra space at one end of the fence and a post at each end.)

A fence has 64 strips of wood. Each strip is 8cm wide. The strips are 7cm apart.

Question: How long is the fence?

Answer: 640cm 1020cm 960cm  

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