Answer:
2. is 7 ft
3. is sqrt(180) or 6sqrt(5)
Explanation:
Both go by the rules of a^2+b^2=c^2,
for the 1st question, c=25 and b=24, so we're trying to find a, 25^2-24^2=49=sqrt of 49=7
for the 2nd, we have a and b already, so 36+144=180, c= sqrt(180) --> 6sqrt(5)
hope it sort of helped!