Circle a and circle b are congruent. cd is a chord of both circles. if ab = 24 in. and the radius is 13 in., how long is cd?

I'm terrible at math any here is appreciated.

If rt is greater than ba, which statement must be true ?

Can someone plz me understand how to do these. plz, show work.in exercises 1-4, rewrite the expression in rational exponent form.[tex]\sqrt[4]{625} \sqrt[3]{512} (\sqrt[5]{4} )³ (\sqrt[4]{15} )^{7}\\ (\sqrt[3]{27} )^{2}[/tex]