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Annetta_Martin
 2 years ago
If the radius of a circle is multiplied by 2, then how many times larger is the circumference of the new circle?
2.
4.
8.
pi.
Annetta_Martin
 2 years ago
If the radius of a circle is multiplied by 2, then how many times larger is the circumference of the new circle? 2. 4. 8. pi.

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kobesaurus
 2 years ago
Best ResponseYou've already chosen the best response.1C = 2*pi*r , so if r is doubled the new C is 2*pi*2r , so it is 4pi.

kobesaurus
 2 years ago
Best ResponseYou've already chosen the best response.1well 2 times larger.

kobesaurus
 2 years ago
Best ResponseYou've already chosen the best response.1haha not quite, its just doubled. if r is double the circumference is doubled. so its just 2 times larger.

Annetta_Martin
 2 years ago
Best ResponseYou've already chosen the best response.0I got it now, thanks! :)

kobesaurus
 2 years ago
Best ResponseYou've already chosen the best response.1If it asks for area, the equation is \[\pi*r^2 \] so when its doubled the area quadruples. (4x times larger)
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