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  • 22-03-2020
  • Mathematics
contestada

Find the circumference and area of a circle with radius 3m

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gmany
gmany gmany
  • 22-03-2020

Answer:

[tex]\huge{\text{Circumference = }\boxed{6\pi\ m\approx18.84\ m}}\\\\\huge\text{Area = }\huge\boxed{9\pi\ m^2\approx28.26\ m^2}[/tex]

Step-by-step explanation:

The formula of an area of a circle:

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

The formula of a circumference of a circle:

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

where r - radius.

We have r = 3m.

Substitute:

[tex]A=\pi(3^2)=\pi(9)=9\pi m^2\\\\C=2\pi(3)=(2)(3)\pi=6\pi m[/tex]

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