amayamatararachchi amayamatararachchi
  • 20-05-2019
  • Mathematics
contestada

the center of a circle is A(-3, 3) and B(1, 6) is on the circle. Find the area in terms of pi.

Respuesta :

gmany
gmany gmany
  • 22-05-2019

Answer:

[tex]\large\boxed{A=25\pi}[/tex]

Step-by-step explanation:

The formula of an area of a circle:

[tex]A=\pi r^2[/tex]

r - radius

We have the center A(-3, 3) and the point on the circle B(1, 6).

The radius is equal to the distance between the center and the any point on the circle.

The formula of a distance between two points:

[tex]d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]

Substitute:

[tex]r=\sqrt{(1-(-3))^2+(6-3)^2}=\sqrt{4^2+3^2}=\sqrt{16+9}=\sqrt{25}=5[/tex]

[tex]A=\pi(5^2)=25\pi[/tex]

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