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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.
 11 months ago
 11 months 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.
 11 months ago
 11 months ago

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

kobesaurusBest ResponseYou've already chosen the best response.1
well 2 times larger.
 11 months ago

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

Annetta_MartinBest ResponseYou've already chosen the best response.0
I got it now, thanks! :)
 11 months ago

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