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2017 ASDAN Math Tournament
13
13
Part of
2017 ASDAN Math Tournament
Problems
(1)
2017 Guts #13
Source:
11/25/2022
Let
S
1
S_1
S
1
be a square of side length
3
3
3
. For
i
=
2
,
3
,
4
,
…
i=2,3,4,\dots
i
=
2
,
3
,
4
,
…
, inscribe a square
S
i
S_i
S
i
inside
S
i
−
1
S_{i-1}
S
i
−
1
such that the sides of the inner square form four
3
0
∘
−
6
0
∘
−
9
0
∘
30^\circ-60^\circ-90^\circ
3
0
∘
−
6
0
∘
−
9
0
∘
triangles with the outer square. Compute the total sum
∑
i
=
1
∞
area
(
S
i
)
.
\sum_{i=1}^\infty\text{area}(S_i).
i
=
1
∑
∞
area
(
S
i
)
.
2017
Guts Round