To determine what we know about the triangle given the equation \(18^2 + b^2 = 30^2\), we can analyze the equation:
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Recognize that this is in the form of the Pythagorean theorem, which states that in a right triangle, the square of the hypotenuse (the longest side) is equal to the sum of the squares of the other two sides (the legs).
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Here, \(30\) is the hypotenuse, and \(18\) is one of the legs. We need to find \(b\), the length of the other leg:
\[ 18^2 + b^2 = 30^2 \]
Calculating \(30^2\): \[ 30^2 = 900 \]
Calculating \(18^2\): \[ 18^2 = 324 \]
Substituting these into the equation: \[ 324 + b^2 = 900 \]
Rearranging to solve for \(b^2\): \[ b^2 = 900 - 324 \] \[ b^2 = 576 \]
Taking the square root of both sides: \[ b = \sqrt{576} = 24 \]
Thus, the triangle is a right triangle, and the lengths of the sides are \(18\) (one leg), \(24\) (the other leg), and \(30\) (the hypotenuse).
The correct response is:
The triangle is a right triangle with a missing leg length of 24.