Answer:
or
Step-by-step explanation:
step 1
Find the circumference of the circle
The circumference of a circle is equal to
we have
substitute
step 2
Remember that the circumference of the circle subtends a central angle of 360 degrees
so
using proportion
Find the length of an arc by a central angle of 120 degrees
The exact value of the length of the arc is
assume
---> approximate value
5+2+10 is what i thibnk the answer is
BC≈8,38
AB=a
BC=c
CA=b
a²+b²=c²
3.3²+7.7²=c²
√70,18=√c²
c≈8,38
-23 divided by -7