Question

Observe atentamente a figura abaixo: *



O valor da incógnita x é?

x=3

x=2

x=1

x=5

x=4

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Answer 1

$\Large\boxed{\begin{array}{l}\underline{\rm Observe~a~figura~que~anexei}\\\underline{\rm C\acute alculo~da~medida~y}\\\sf 4^2+y^2=(4\sqrt{5})^2\\\sf y^2+16=80\\\sf y^2=80-16\\\sf y^2=64\\\sf y=\sqrt{64}\\\sf y=8\\\underline{\rm C\acute a lculo~da~medida~x:}\\\sf 4^2=x\cdot y\\\sf 8x=16\\\sf x=\dfrac{16}{8}\\\sf x=2\end{array}}$