Answer:
correct option is the 3rd one. square root 65cm.
Step-by-step explanation:
9 cm = hypotenuse
1 side length = 4 cm
pythagorean theorem:
[tex]a^{2} +b^{2} = c^{2}[/tex]
[tex]a^{2}+ 4^{2}=9^{2}[/tex]
[tex]a^{2} + 16 = 81[/tex]
[tex]81-16=a^{2}[/tex]
[tex]65=a^{2}[/tex]
[tex]\sqrt{65} = a^{2}[/tex]
correct option is the 3rd one. square root 65cm.
hope this helped!
mark me brainliest :D
