b=√c^2-a^2
#1
b=√5^2-3^2=√25-9=√16=4
#2
b=√13^2-5^2=√169-25=√144=12
#3
b=√1.3^2-0.5^2=√1.69-0.25=√1.44=1.2
b=√c^2-a^2
#1
b=√5^2-3^2=√25-9=√16=4
#2
b=√13^2-5^2=√169-25=√144=12
#3
b=√1.3^2-0.5^2=√1.69-0.25=√1.44=1.2