Answer :

[tex] a^{2} + b^{2} = c^{2} [/tex]

4) [tex] 16^{2} +63^{2} =4225 = c^{2} [/tex]
[tex]c= \sqrt{4225} [/tex]

Missing length= [tex]65cm[/tex]

5) [tex]13 ^{2}- 5^{2} =144 [/tex]
[tex]b= \sqrt{144}=12 [/tex]
[tex]12 ^{2}+35 ^{2}=1369 [/tex]
c=[tex] \sqrt{1369} [/tex]

Missing length =
 [tex]37cm[/tex]