Answer
The depth of the crater is about 9500ft.
Work Step by Step
1. Lets x be the depth of the crator
Then, $\frac{x}{11000}=\frac{1.3}{1.5}$
2. Solve the equation to find x:
$x=\frac{1.3\times 11000}{1.5}\approx 9500ft$
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