Answer:
a=16
Step-by-step explanation:
Given that there is a right angle triangle. whose sides are 20, 12 and "a".
Using that information we have to find that value of "a".
Since it is a right angle triangle hence apply Pythagorean formula:
[tex]20^2=12^2+a^2[/tex]
[tex]400=144+a^2[/tex]
[tex]400-144=144+a^2-144[/tex]
[tex]256=a^2[/tex]
Take square root of both sides
[tex]16=a[/tex]
Hence final answer is a=16
