Based on my knowledge Radius and Diameter are not part of a pyramid.
Answer:
4 11/40 hope this helps :)
Step-by-step explanation:
5x + 9x + 26 = 180
14x = 180 - 26
14x = 154
x = 154 / 14
x = 11
answer
B. 11
Since there are 2 rows with 8 in each row, your equation is: C=2(8), where C stands for the number of chairs. 8x2, or 8+8, equals 16. There are 16 chairs set up.