Question

Considere o triângulo da figura a seguir

Answer 1

I don't speak the language but I have a Portuguese Water Dog so I'll get her to translate.

It looks like we're after AC which is the hypotenuse of ADC

We need AD which is the leg of ADB, right angle D

`2^2 + AD^2 = 10^2`

`AD^2 = 100 -4 = 96`

`AC^2 = AD^2 + CD^2 = 96 + (8+2)^2 = 196`

`AC = √(196) = 14`

Choice (a)