GMC Answer : 3 because of there
16, 24, 32, 40, 48, 56, 64, 72, etc.
So for number 2 i am 100% on which the area of the triangle is 6.
and then 1 i think not 100% sure is an acute angle again not 100%
then 3. it don't make sense to me so idk about that 1 srry.
~Good Luck~
15c+10d that’s the answer