self Maths Puzzle

A square is 1m in each side. If two strips 1cm of wide in lengthwise and breathwise are cut off.what is the total length of the two strips?

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self Other Question

ABCDEFGH is a regular octagon. A and E are opposite vertices of the octagon. A frogstarts jumping from vertex to vertex, beginning from A. From any vertex of the octagon except E, it may jump to either of the two adjacent vertices. When it reaches E, the frog stops and stays there. Let an be the number of distinct paths of exactly n jumps ending in E. Then, what is the value of a2n-1? xy+bx=15 please solve for x