The student should compute 6*180 = 1080 because of the formula
S = 180(n-2)
We have n = 8 sides which leads the n-2 part to become n-2 = 8-2 = 6
Answer:
Step-by-step explanation:

Hence, on base 10, the next whole number is 4995 and if we convert back to base 9, we will have

Therefore, the number on base 9 will be 6750
Trapezoid ABCD was the original figure for trapezoid A'B'C'D. They are similar because they are the same shape, Trapezoid A'B'C'D is slightly bigger or smaller because it was dilated from trapezoid ABCD.