Answer:
√(23)
Step-by-step explanation:
The Pythagorean Theorem is a² + b² = c²
so...
a = 7
b = 3
7² + 3² = c²
14 + 9 = c²
√(23) = c
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Answer:
C) r3 < r2 < r1
Step-by-step explanation:
Well if the room is square then you ned to find the square root of the area.
Find 
The answer is R= {-7, 1, 9, 17}. All you have to do is plug in the numbers (the domain) into the equation.