Answer is <span>D.
A and D
A = 2(6+2) = 16
D = 2(4+3) = 16
both have perimeters = 16</span>
Answer:
and 
Step-by-step explanation:
Recall that
is a value of the function cosine for the special angles:
and
, then:

6x + 45 + 3x = 180
9x - 45 = 180
9x = 135
x = 15
Answer:
198 inches
Step-by-step explanation:
There are 12 inches in each foot
multiply 16 by 12 you get 192
Half of a foot is 6 inches
add 6 inches and you get 198