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anonymous
 3 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.
anonymous
 3 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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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0C = 2*pi*r , so if r is doubled the new C is 2*pi*2r , so it is 4pi.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0haha not quite, its just doubled. if r is double the circumference is doubled. so its just 2 times larger.

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

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0If it asks for area, the equation is \[\pi*r^2 \] so when its doubled the area quadruples. (4x times larger)
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