Which is the approximate measure of this angle?

When y’all answer can y’all explain too !

What sums are equal to 6/12? choose all answers that are correct a.6/12+6/12+6/12+6/12+6/12+6/12 b.2/12+1/12+1/12+2/12 c.5/12+1/12 d.1/12+1/12+1/12+3/12 plz : )

The ph level of a blueberry is 3.1 what is the hydrogen-ion concentration [h+] for the blueberry