Step-by-step explanation:
5^2 + b^2 = 9^2
25 + b^2 = 81
b^2 = 56
square root both sides and b = 7.48 cm
Answer:
b= [tex]\sqrt{56}[/tex]
Pythagorean th: a^2+b^2=c^2
b^2+5^2=9^2
b^2+25=81
b^2=81-25
b^2= 56
i tried to do it the way you kinda gave the picture, not sure if right or not
