Answer:
I believe its 95cm because the T has an area of 30cm and the square has an area of 225 and I subtracted 225 and 30 and got 95cm
[tex]\bold{Hello!}\\\bold{Your~Answer~Is~Below!}[/tex]
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[tex]\bold{Solution~Steps:}[/tex]
[tex]1.)~Area~of~the~yellow~region:[/tex]
[tex]2.)~Area~of~the~composite~shape:[/tex]
[tex]\bold{Add~them~all~up:}[/tex]
[tex]3.)~Subtract:[/tex]
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[tex]\bold{Answers:}[/tex]
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[tex]\bold{Hope~this~helps,}\\\bold{And~best~of~luck!}\\\\\bold{~~~~~~~-TotallyNotTrillex}[/tex]