Answer:
D.
B.
Step-by-step explanation:
for the first one remember that hypotenuse² = cathetus1² + cathetus2²
which leads to the second question
WA²(hypotenuse) = XA²+WX²
therefore XA²=WA²-WX²=81
XA=√81=9
The period is 11
Explanation
D/r , i think , i’m not sure if it is correct
Area = Side x Side meaning it's 12 x 13 = 156
Area = 156

I'm not sure if this is right. I didn't feel confident with my answer.