please help me if you can if your going to say I'm cheating i don't care cause i know I'm not thanks!!

Answer:
b=34
Step-by-step explanation:
hypotenus formula, a² + b² =c²
24+6=30
b=30
● need to plus 6 bcs the height is increased from usual height.
a=16
● the value unchange bcs the width doesn't increase or decrease.
subs value a ,b and c into the hypotenus formula,
● c need to be the longest from other 2 line.
16²+30²=b²
1156=b²
b=square root(1156)
b=34