1.49÷7=7, that is, there are 7 people in each row, so the number of people in the first and last rows is 7, the number of people in the leftmost and rightmost rows is 7, and the head and tail of the leftmost and rightmost rows have been calculated, so the number of people in the outermost row is

7×2+(7-2)×2=24 (person)

A: There are 24 people in the outermost layer of this founder.

It is a circular guardrail, which is connected end to end. Ten posts and ten fences are needed at ten intervals.

* * * Need 10+ 10=20 (root)

A * * * needs 20 pieces of wood.

I think the second question should be interpreted like this. The meaning of the question itself is a bit unclear, but I think it is a guardrail, and the result is a wooden strip. I think the battens are soft, so you need posts and fences. Please have a look for yourself.

If you ask how many pieces of wood are needed, I think it is 10.