MvGMAT2019 wrote:
Triangle 1
12^2=4^2+a^2
a^2=144-16
a=sqr128
a=sqr2*6
Triangle 2
12^2=a^2+a^2
144=2a^2
a^2=72
a=sqr72
a=sqr2*8
Difference
2*sqr2
Posted from my mobile device
Although the solution is correct, the first triangle is the one that touches the wall at 8*sqrt 2
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