Question

Determine o valor de AB na figura:

Answer 1

$15^2=12^2+x^2\\\\225=144+x^2\\\\x^2=81\\\\x= \sqrt{81} =9$

&

$5^2=4^2+y^2\\\\25=16+y^2\\\\y^2=9\\\\y= \sqrt{9} \\\\y=3$

De A até B = 9+3= 12