Respuesta :

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

Answer:

1st pic : 3²+4²=5²

2nd pic: 9 in.

Step-by-step explanation:

According to Pythagoras theorem , in a right angled triangle, where

the longest side (opposite to the right angle) say its length X , the other two sides say Y,Z.

X² = Y² + Z²

Y² = X² - Z²

Z² = X² - Y²