A=((40+64)/2)*18= 936 units^2
To find the number of possible combinations, you multiple the possible number of outcomes for each category together. For example, there are 5 choices of pastries, 4 choices of drinks, and 2 newspaper choices, so normally there are 5 x 4 x 2=40 possible combinations. Without a muffin, these numbers would change to 4 x 4 x 2=32. The difference would be 8 possible options, so choice C.
In this question, angle 5 and angle 2 are linear pair. And angles of linear pair are supplementary angles .
Therefore

And sum of interior angles of a triangle is 180 degree, that is

SInce both the equations have 180 in the right side, left side of both equations are equal too . That is

Which gives

So the correct option is A .
The answer is to 22 is 354 23-657