The variable b represents the area of the base of the prism or pyramid. Hope that helps!
Answer:
If it's not too late by now, the answer is 19.9 
Answer: 83 cards
Step-by-step explanation:
38 x 2 + 7 = 83
Answer: True, True, True
Step-by-step explanation:
A. True. Angles B and C are congruent, and since B' is congruent to B, by the transitive property, C is congruent to B', and thus has the same measure.
B. True. AB>BC, and the rigid motions won't change the side lengths.
C. True for the same reason in B.