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larisa [96]
3 years ago
12

I need to know how long arc BC is

Mathematics
1 answer:
slavikrds [6]3 years ago
8 0

Answer:

Arc length of arc BC is 6.98 units or roughly 7  units.

Step-by-step explanation:

First recall that the formula for the circumference of a circle is C = 2πr, where r is the radius.  Here the radius is 4 units. so the circumference of the (entire) circle is C = 2π(4 units) = 8π units.

The central angle for the arc shown in yellow is 100 degrees.  The length of this arc is a fraction of C as found earlier:

100

------- * 8π units = 800π/360 units, or 6.98 units (about 7 units).

360

Arc length of arc BC is 6.98 units or roughly 7  units.

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