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PolarNik [594]
4 years ago
11

Problem

Mathematics
1 answer:
ddd [48]4 years ago
8 0

Answer:

The area of the circular cross section of the pipe is 100\pi\ cm^{2}

Step-by-step explanation:

we know that

The area of the circle (cross section of the pipe) is equal to

A=\pi r^{2}

we have

r=20/2=10\ cm ----> the radius is half the diameter

substitute

A=\pi (10)^{2}

A=100\pi\ cm^{2}

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