What is 21/4 in simplest form

Which shows the correct lengths of side c in both scales? scale 1: 45 m; scale 2: 60 m scale 1: 60 m; scale 2: 45 m scale 1: 36 m; scale 2: 27 m scale 1: 27 m; scale 2: 36 m mark this and return save and exit

What is the area of the triangle 10 13 12

If f(x) = 2x + 8 and g(x) = x4, what is (gº)?