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Zielflug [23.3K]
3 years ago
12

PLEASE HELP AND SHOW WORK ILL GIVE BRAINLIEST

Mathematics
1 answer:
Serjik [45]3 years ago
6 0

Answer:

11.3 units

Step-by-step explanation:

backward Pythagoras theorem

c²- b²=a²

12²-4²=a²

144 - 16 = a²

128=a²

√(128)=a\

11.3=a

11.3 units

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