Half of halves

Half of the square we cut off, then half of the rest, etc. Five cuts we made in this way.

What part of the content of the original square is the content of the cut part?

Correct answer:

r =  0.9688

Step-by-step explanation:

$$\begin{gathered} q=1\mathrm{/}2={\displaystyle \frac{1}{2}}=0.5 \\ S=1 \\ {S}_1=S-q\cdot S=1-0.5\cdot 1={\displaystyle \frac{1}{2}}=0.5 \\ {S}_2=S_1-q\cdot S_1=0.5-0.5\cdot 0.5={\displaystyle \frac{1}{4}}=0.25 \\ {S}_3=S_2-q\cdot S_2=0.25-0.5\cdot 0.25={\displaystyle \frac{1}{8}}=0.125 \\ {S}_4=S_3-q\cdot S_3=0.125-0.5\cdot 0.125={\displaystyle \frac{1}{16}}=0.0625 \\ {S}_5=S_4-q\cdot S_4=0.0625-0.5\cdot 0.0625={\displaystyle \frac{1}{32}}\doteq 0.0313 \\ r=S-S_5=1-0.0313={\displaystyle \frac{31}{32}}=0.9688 \end{gathered}$$

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