yourstruly3azlan yourstruly3azlan
  • 07-02-2018
  • Mathematics
contestada

The area of a circle is 36π square units. How many units long is its radius? (Use only the digits 0 - 9 and the decimal point, if needed, to write the answer.)

Respuesta :

calculista
calculista calculista
  • 20-03-2019

Answer:

The radius is [tex]r=6\ units[/tex]

Step-by-step explanation:

we know that

The area of a circle is equal to

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

In this problem we have

[tex]A=36\pi\ units^{2}[/tex]

substitute in the formula and solve for r

[tex]36\pi=\pi r^{2}[/tex]

Simplify

[tex]36=r^{2}[/tex]

square root both sides

[tex]r=6\ units[/tex]

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