Question

o valor de x na figura abaixo é:

a) 29cm
b) 15m
c) 8m
d) 5m
e) 10m​

Answer 1

$\sf y^2+6^2=10^2\\\sf y^2+36=100\\\sf y^2=100-36\\\sf y^2=64\\\sf y=\sqrt{64}\\\sf y=8~m\\\sf x^2=(4+y)^2+9^2\\\sf x^2=(4+8)^2+9^2\\\sf x^2=12^2+9^2\\\sf x^2=144+81\\\sf x^2=225\\\sf x=\sqrt{225}\\\huge\boxed{\boxed{\boxed{\boxed{\sf x=15~m}}}}\blue{\checkmark}$