I hope this helps good luck
The difference bettween 30 and 5 would be 25
1/4*13=3.25 gallons
2.50*4=10
3.25+4=7.25
The answer is 7.25 gallons
H^2 = P^2 + B^2
a. 6^2 = 2^2 + 3^2
36 = 4 + 9
36 = 13
Therefore this is not a Pythagorean triple
b.5^2 = 4^2 + 3^2
25 = 16 + 9
25 = 25
Therefore this is a phythagorean triple