Answer:
12
Step-by-step explanation:
Using Pythagorean Theorem we know that
a² + b² = c²
7.2² + 9.6² = c²
51.84 + 92.16 = 144
Then find the square root of your c and you should get 12
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Or: 7.2 + 9.6 = 16.8 ft if that's what you mean
