First find equation
center is (h,k) then
(x-h)^2+(y-k)^2=r^2
given
(7,0) is center
(x-7)^2+y^2=r^2
also given (2,0)
(2-7)^2+0^2=r^2
(-5)^2=r^2
25=r^2
(x-7)^2+y^2=25 is equation
take derivitive of both sides, implicit differntiaton
2(x-7)+2y dy/dx=0
2(x-7)=-2y dy/dx
(7-x)/y=dy/dx
at (2,0)
(7-2)/0
undefined
that means the line is x=something
(2,0)
the equation is x=2
Answer:
5 x 4 = 20, 20 x 1/2 (basically just dividing by 2) = 10
10 x 3(width) = 30 inches is your answer.
Here are the coordinates for each.
H - (4,1)
I - (0,1)
J - (1,-3)
K - (-3,-4)
L - (-4,0)
M - (3,-2)
To find these simple go from the x axis (horizontal) to the y axis (vertical), labeling as "X,Y".
