The answer is
A≈3217u²
For the area of circles, multiply

×radius²
Answer:

Step-by-step explanation:
Remember that the center of the circle would be equidistant from the given points that lie on the circle.
By determining the diameter through the distance of the given points, we can determine the radius by dividing this distance by 2. And by determining the radius we can determine the center of the circle. Let's do it.


So now that we know the radius is 13 units, we can eliminate answer choice(s) # 2 and # 4. That leaves us with the first and third answer choices. The center being (5,12) is not likely, as most of the circle lies in the 2nd quadrant. That is presumably why (- 3,17) is more predictable. Our answer is the third option.
The answer is C
You would distribute the 5 so 5 times x= 5x
and 5 times positive 10 = 50
You are left with 5x=50
We are given all three angles here:
Angle A =68 degrees
Angle B =90 degrees
Angle C =22 degrees.
Now let us calculate :
sin (A) = sin (68) = 0.927
cos (B) = cos (90) = 0
sin (B) = sin (90) =1
cos (C) = cos (22) = 0.927
tan (C) = tan(22) =0.4040
So we can see that sin (A) and cos (C) are both equal to 0.927.
So cos (C) is the correct option.
Area = 1/2bh = 1/2 x 8.5 x 5.4 = 22.95 squared centimeter