Answer:
√(243)
Step-by-step explanation:
a2+b2=c2
c2 = Hypotenuse
a2 = Leg
b2 = Second Leg
givens
18 = c2 = Hypotenuse
9 = a2 = One Leg
9 sqaured + b squared = 18 squared
81 + b squared = 324
-81 -81
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b squared = 243
b = square root 243
b = √(243)
