Which expression gives the area of the red rectangle.

a

(a + b)(c + d)

b

(a + b)(c - d)

c

(a + b)(c + d) - c(a + b) - bd

d

(a + b)(c + d) - d(a + b) - bd

Assumption:

The figure is not given in the question so in absence of figure it is difficult to tell exact answer. However in order to solve it we assume that Lenght of RED rectangle is (A+B) and width is (C+D).

The correct answer is A. (A+B)(C+D).

Step-by-step explanation:

The formula to calculate area of rectangle is = Lenght * Width

Area = L* W

(Putting values)

Area = (A+B)(C+D)

i think it is everything has to equal 180 so, if i correct 4=c. 6=d. 8=a. 7=b. and the last question would be c. because they are parallel lines and they are congruent.

step-by-step explanation:

the reason everything has to equal to 180 is because that is how it works. i'm guessing that is its rule. 4 and 8 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 6 and 7 are congruent and parallel so, that would be 30+30 because they have the same number. it would equal 60. 60+60 is 180. so, now you have your answer