Respuesta :

We Know,

[tex]\:\mathsf{Perimeter\: of\: circle\: = 2πr}[/tex]

We are given with radius of the circle i.e. 90 m

Now,

Perimeter of circle = 2πr

= 2(3.14)(90)

= 565.2 m²

Hope this helps you!

The circumference of a circle with radius 90 is 565.56

Formulas:

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

[tex]C=\pi *d[/tex]

[tex]C=\sqrt{4*\pi *A}[/tex]

[tex]\pi =3.1415[/tex]

[tex]A=[/tex] [tex]area[/tex] [tex]of[/tex] [tex]a[/tex] [tex]circle[/tex]

[tex]C=circumference[/tex] or [tex]perimeter[/tex]

[tex]r=radius,d=diameter[/tex]

Step-by-step Solution:

Circumference of a cicle in terms of radius:

Circumference [tex]=2*\pi*r=2*3.[/tex] [tex]14*90=565.56[/tex]

In terms of diameter:

Circumference [tex]=\pi*d=3.14*180=565.2[/tex]

In terms of area:

Circumference [tex]C=\sqrt{4*\pi*A}=\sqrt{4*\pi*25450} =565.56[/tex]

Note: for simplicity, the operations above were rounded to 2 decimal places and π was rounded to 3.14.

A circumference of 565.5 meters is equal to:

  • 0.5655 kilometers (km)
  • 56550 centimeters (cm)
  • 565500 millimeters (mm)
  • 0.351385 miles (mi)
  • 618.438 yards (yd)
  • 1855.31 feet (ft)
  • 22263.8 inches (in)