Question

plz someone give correct answer step-by-step
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Answer 1

Answer:

x^2=4

y^2=12

√(x^2+y^2)=√16=4

Answer 2

$x \times y = \sqrt{x {}^{2} + y { }^{2} } \\ x = 2 \\ y = 2 \sqrt{3 } \\ (2 \times 2 \sqrt{3} ) = \sqrt{2 {}^{2} + (2 {}^{2} (\sqrt{3 } } ) {}^{2} ) = \\ = \sqrt{4 + 12 } \\ \sqrt{16 } = 4$