Question

Find the value of y A)6/3 B)6 C)2/3 D)4

Answer 1

Answer:

y = A ($6\sqrt{3}$)

Step-by-step explanation:

$x^{2} +y^{2} = 12^{2}=144\\y^{2}-9^{2}=x^{2} -3^{2} \\x^{2} -y^{2}=-72\\2y^{2}=216\\y^{2}=108\\ y=\sqrt{108}=6\sqrt{3}$