A circle has a sector with area 1/2 pi and central angle of 1/9 pi radians. What is the area of the circle

sq. units.

Step-by-step explanation:

It is given that a circle has a sector with area and central angle of radians.  

We know that, the area of sector is

where, r is radius and is central angle in radian.

Substitute the values of A and .

The radius of the circle is 3 units.

So, the area of circle is

Therefore, the area of circle is sq. units.

the correct answer is option c.   3

step-by-step explanation:

points to remember

equation of the line with coordinates (x₁, y₁) and (x₂, y₂) is given by,

slope m = (y₂ - y₁)/(x₂ - x₁)

from the figure we can see a line with two coordinates given

to find the slope of given line

here   (x₁, y₁)   = (-1, -1 ) and (x₂, y₂) = (1, 5)

slope m = (y₂ - y₁)/(x₂ - x₁)

  = (5 - -1)/(1 - -1)

  = (5 + 1)/(1 + 1)

  = 6/2 = 3

therefore the correct answer is option c.   3

answer: the answer is 40.82

step-by-step explanation: 3.14 x 13(or half of 26) to the power of 2