Question

help me please please​

Answer 1

Answer:

6.22cm

Step-by-step explanation:

see the attachment.

Answer 2

Answer:

The length of adjacent is 6.22cm

Step-by-step explanation:

You have to apply Pythagoras Theorem' :

${a}^{2} + {b}^{2} = {c}^{2}$

$let \: b = 6.5 \\ let \: c = 9$

${a}^{2} + {6.5}^{2} = {9}^{2}$

${a}^{2} + 42.25 = 81$

${a}^{2} = 38.75$

$a = \sqrt{38.75}$

$a = 6.22$