Answer:
10.30
Explanation:
Pythagorean Theorem is 
 +
 + 
 =
 = 
 . The short leg(a) is 5 units long and the long leg(b) is 9 units long. CD is the hypotenuse, the longest side (c).
. The short leg(a) is 5 units long and the long leg(b) is 9 units long. CD is the hypotenuse, the longest side (c).
 +
 +
 =
 =

25+81=

106=

 =
 = 

10.29563014 = c
Rounded to the nearest hundredth, 10.30
To check this is correct, the hypotenuse is the longest side, and 10.30 is longer than 5 and 9.