A building engineer analyzes a concrete column with a circular cross section. The circumference of the column is 18π meters.
1 answer:
Answer:

Step-by-step explanation:
Step 1
Find the radius of the circular cross section
we know that
The circumference is equal to

we have

substitute and solve for r

simplify


Step 2
Find the area of the circular cross section
The area of the circle is equal to

we have

substitute


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i am a mathematics teacher. if anything to ask please pm me
Affect the size, shape, or phase of a substance.