Answer:
solve 80^2 to get 6400
solve 84^2 to get 7056
add 6400 and 7056 to get 13456
square root 13456 to get 116
Step-by-step explanation:
80^2=80*80=6400
same with 84 84*84=7056
7056+6400=13456
√13456=116
