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olga nikolaevna [1]
3 years ago
13

I need help and my teacher wont help

Mathematics
1 answer:
BaLLatris [955]3 years ago
8 0

Answer:

\bold{8\pi} or \bold{25.12}

Step-by-step explanation:

We know that as shown by the diagram, the radius is 4. So in this case, we want to find the circumference of the entire circle, then just multiply by \frac{3}{4}, because the radii from the intact section are perpendicular.

The circumference of a circle is just \pi \times d where d is the diameter of the circle. The diameter is just the radius \times 2 which gives us

                                            d = 4 \times 2 = 8

Thus lending us 8\pi or 25.12 if we substitute \pi with 3.14.

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