I need help on this homework

Atriangle has a side lengths of 18cm, 80 cm and 81cm. classify it as acute obtuse or right?

The mean finish time was 185.52 with a standard deviation of 0.327 minute. the winning car driven by chris finished in 185.13. the previous year race had a mean finish time of 110.3 with a standard deviation of 0.106. the winning car that year driven by karen finished in 110.13 minutes. find their respective z-scores. chris - z-score karen “- z-score

Ineed to know the ordered pairs for this equation i need the answer quick because it’s a timed test