Answer:

Step-by-step explanation:
Circumference of the column 
Circumference of a circle
Therefore:

Area of a Circle 
Since radius of the cross section of the column =9 meters
Area of the cross section of the column

Answer:
Step-by-step explanation:
You must share g(x).
Working with what you've already shared:
h(x) = f(x) + g(x)
= x + 6 + g(x)
(7.2 × 10^7) ÷ (9 × 10^4)
= (7.2 / 9) x 10^(7 - 4)
= 0.8 x 10^3
= 8 x 10^2
Answer
C. 8 × 10^2
Answer A is correct because the straight line is called a parallel line