<span> It would depend on the number of rows?
This is an arithmetic sequence and the sum of n terms is -->
n/2(2a+(n-1)d), where a is the first term and d is the common
difference. In this case a = 10, d =6
n/2(20+6(n-1)) = 3n^2 + 7n = ANSWER
n = number of rows
</span>
Answer:4
Step-by-step explanation:
2x-6=14
2x=8
x=4
<span>A shape has Rotational Symmetry when it still looks the same after a rotation.</span>
I think the first one might be 18 second might be 10
