Help me solve this last problem please :/

6

Step-by-step explanation:

I'm assuming this is a 30 60 90 degree triangle (this meaning that the degrees of the triangle are 30, 60, and 90) so since its a 30, 60, 90 triangle you are given the length of the short leg which is 3, In 30, 60, 90, triangles, the in order to find the hypotenuse using the value of the short leg you just need to multiply the value of the short leg by 2, so 3*2=6.

Hope this helps :)