Answer:
x=21 interior angle =150 exterior angle=210
Step-by-step explanation:
to find the angle rule=(n-2)×180
n is the number of sides in the polygon
(12-2)×180=1800
1800/12=150 (this is the interior angle)
7x+3=150
x=21
exterior angle = 360-150=210
Answer: approximately 33.59 square cm
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Work Shown:
P = area of equilateral triangle with side length 's'
P = (sqrt(3)/4)*s^2
P = (sqrt(3)/4)*14^2
P = 49*sqrt(3)
Q = area of circle with radius r
Q = pi*r^2
Q = pi*4.04^2
Q = 16.3216pi
S = area of shaded region
S = P - Q
S = 49*sqrt(3) - 16.3216pi
S = 33.5946709160439
S = 33.59
Answer:
Step-by-step explanation:
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