Answer:
arc = 7 pi
Step-by-step explanation:
The length of the arc is circumference
C = 2 * pi *r
C = 2 * pi *4
C = 8 pi
A circle is 360 degrees. The arc is 315 degrees
The arc is 315/360 of the circle, that is 7/8 of the circle, so it will be 7/8 of the circumference
7/8C = 7/8 (8pi)
arc = 7 pi
Answer: 115.5°
Step-by-step explanation:
Feok the diagram, chords AC and BD intersect in the circle.
X° = AB + CD/2
X° = (79 + 152)/2
= 231/2
X° = 115.5
1) x + 8 = -52
Subtract both sides by 8:
x = -60
2) y - 17 = -37
Add 17 to both sides:
y = -20
3) -12 + k = 18
Add 12 to both sides:
k = 30
4) 5m = -20
Divide both sides by 5:
m = -4
5) x/9 = 3
Multiply both sides by 9:
x = 27
6) 4z/5 = 16
Multiply both sides by 5/4:
z = 20
Answer:
b
Step-by-step explanation: