I think its c hope this helps sorry if it dont
Hello,
g_m(15,1215)=√(5*1215)=9√15≈77,942286340....
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180 = 2x + 26
-26 -26
154 = 2x
÷2 ÷2
77 = x
One of the sides is 77
It is 2 inches long this is because of the length of the hands .