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BashieQ

11.66 or 12

Step-by-step explanation:

c^2 = a^2 + b^2

19^2 = 15^2 + b^2

361 = 225 + b^2

361 - 225 = b^2

136 = b^2

(square root of both sides)

b = 11.66or 12
B=11.661

15^2 + B^2= 19^2
225 + B^2 = 361
B^2 = 136 (subtract 225 from both sides)
136= 11.661 (square root)
B= 11.661

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