Answer:
Area = 3.77 cm^2
Step-by-step explanation:
The diagram using the given statement is attached below
Diameter of larger circle is 10 so radius R1 = 10/2= 5
diameter of smaller circle is 7.6, radius (r1)= 3.8
We need to find the area of the shaded region
Area of the circle =
Area of annulus =
=
Area = 3.77 cm^2
Answer:
y = -2/3x - 11
Step-by-step explanation:
Steps to find the perpendicular bisector:
1) Find the midpoint of line PQ
Midpoint formula: (,
)
Midpoint of line PQ = (6, -2)
2) Find the slope of line PQ
Slope formula:
Slope of line PQ = 3/2
3) Find the negative reciprocal of the slope of PQ
To find the negative reciprocal just swap the numerator and denominator and add a negative sign. If it is already negative it will become positive.
In this case it will be -2/3
4) Write the equation of line PQ in slop-intercept form.
Slope-intercept form: y = mx + b
This is what it will look like for line PQ: y = x + b
5) Plug the points of the midpoint into the line and solve for the intercept (b)
This is what it will look like: -2 = (6) + b
-2 = 18/2 + b
-2 = 9 + b
-11 = b
6) Write the equation of the perpendicular bisector
m = the negative reciprocal of the slope of PQ = -2/3
This is what the equation will look like: y = -2/3x - 11
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