they give you the formula. Now let's plug numbers in.
it is A= 1/2 (15+12)8 remember PEMDAS, so parentheses first.. A= 1/2 (27)8 A=1/2(216) if the 1/2 confuses you, just remember that that fraction is saying one half, and another way to represent halves are 0.5 so A=108
