MDoc101 MDoc101
  • 18-05-2019
  • Mathematics
contestada

Find the exact area of a circle having the given circumference.

3pi

A =

2.25
3
9

Respuesta :

gmany
gmany gmany
  • 18-05-2019

Answer:

A = 2.25π

Step-by-step explanation:

The formula of an area of a circle:

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

r - radius

The formula of a circumference of a circle:

[tex]C=2\pi r[/tex]

We have:

[tex]C=3\pi[/tex]

Substitute:

[tex]2\pi r=3\pi[/tex]            divide both sides by 2π

[tex]r=1.5[/tex]

Substitute:

[tex]A=\pi(1.5)^2=2.25\pi[/tex]

Answer Link
Everythang
Everythang Everythang
  • 28-10-2020

This answer is correct, I double checked it and got it right on the assignment in OW. :)

Answer Link

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