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Earn +20 ptsQ: How do triple the radius?
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What happens to the circumference of a circle if you triple the radius?
Since circumference is proportional to the diameter (the proportionality is the definition of the irrational number pi) and the radius is just twice the diameter, if you triple the radius, you also triple the circumference.
What happens to the diamenter of a circle if you triple the radius?
It will be twice the size of the tripled radius
What happens if you triple the radius in a circle?
nothing you will just just get the radius in 3 circles.
Why the area is multiplied by 9 if you triple a radius?
Because the area of a circle is pi*radius2. So, if you triple the radius to 3*radius, the area becomes pi*(3*radius)2 = pi*(32*radius2) = pi*9*radius2 that is, 9 times the original area.
If you triple the radius of a circle how is its circumference affected?
The circumference of a circle = 2*pi*r. if you triple r, the circumference is tripled also.
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