Answer: 
Step-by-step explanation:
To solve this problem you must apply the proccedure shown below:
- By definition, the perimeter of the figure is the sum of the lenght of each side. Then, you must make the addition as following:
Where 
is the perimeter of the figure.
- Add the like terms, then, you obtain the following expression in simplest form:
Go on demos.com and plug in your equation you will get a graph
Answer:
Chord 12 cm long subtends an angle of 40 degrees at the center of a circle.
θ= 40° = 0.698 rad
Let R be the radius of circle.
Chord Length = 2Rsin(θ/2)
12=2R sin (0.698 /2)
R= 17.54
Ans: Radius of circle = 17.54 cm
Answer:
x = 11
x = 7
Step-by-step explanation:
divide each side by 3 to get:
(x-4)² = 9
(x-4)² is the difference of two squares and has these factors:
(x+2)(x-2) = 9
x + 2 = 9; x = 7
x - 2 = 9; x = 11
