Answer:
Step-by-step explanation:
Given that segment BC is the base of the triangle, this drawing shows that triangle ABC is an equilateral triangle.
Since;
<B = <C = 60°
Then,
<A + <B + <C = 
<A + 60° + 60° = 
<A =
- 
= 60°
Thus,
AB = BC = AC = 6 inches
The construction is attached to this answer.
Answer: x = 4/3
Step-by-step explanation:
Answer:263.9 in squared
Step-by-step explanation:
Find the area of the whole circle
Multiply area times the angle of the shaded region by total angle
Get answer
(pi)(12^2) = Area of whole
(Whole area)x(210deg/360deg)
=== 263.9 in squared