Answer: The answer is 314.28 cm² (approx.).
Step-by-step explanation: Given that an engineer is going to install a new water pipe. The diameter of this circular pipe is, d = 20 cm.
We need to find the area 'A' of the circular cross-section of the pipe.
Given, diameter of the circular section is

So, the radius of the circular cross-section will be

Therefore, cross-sectional area of the pipe is

Thus, the answer is 314.28 cm² (approx.).
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Thus ;

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With all of the following you are able to make a graph, table, and a equation.
Answer:
A
Step-by-step explanation:
Brainliest PLEASE
Answer:
15.8 in.
Step-by-step explanation:
63.2 / 4 = 15.8