2 stacks of coins are shown. In the first stack, the coins are stacked straight up. In the second stack, the coins are stacked to the side. Look at the two stacks of coins. Each stack contains the same type and number of coins. Make a conjecture. How do the stacks compare? Check all that apply. The two stacks are the same height. The area of a coin face in one stack is the same as the area of a coin face that lies in the same horizontal plane. The two stacks have equal volume.