If you double the radius of a circle, you also double its circumference.
It's now 200% of what it was originally ... an increase of 100% .
See rigorous proof below.
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Let radius = r
Circumference = 2πr
Double the radius:
New radius = 2r
New circumference = 4πr
Increase in circumference = 4πr - 2πr = 2πr = (2πr/2πr) X 100%
=100%
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
4.6m. The circumference is double the radius.
The circumference of a circle increases with an increase in the radius as it is directly proportional its radius.
easy you just double it. Additional answer No, that's incorrect. If you double the radius you get the diameter. To get the circumference you multiply the radius by 2 then by 3.142. 3.142 is known as pi
Double the radius and multiply by pi
The circumference is directly proportional to the radius. So increasing the radius by 50% causes the circumference to also increase by 50%.
4.6m. The circumference is double the radius.
the equation for the circumference is Pi * double the radius which is 3.1416 * 15.5 * 2 The circumference of a circle with a radius of 15.5cm is 97.3cm.
The circumference of a circle increases with an increase in the radius as it is directly proportional its radius.
The circumference also doubles.
easy you just double it. Additional answer No, that's incorrect. If you double the radius you get the diameter. To get the circumference you multiply the radius by 2 then by 3.142. 3.142 is known as pi
Double the radius and multiply by pi
circumference= pi(3.14) by the diameter. if your given the radius, double the radius and times by pi.
Double the radius.
The cricle's circumference is a linear function of its radius, so they change in direct proportion.If the radius increases by 75%, the circumference also increases by 75%.
The circumference of any circle is (pi) x (diameter),and of course, the diameter is double the radius.
there is no constant that will calculate this, since circumference is calculated with only radius and area with radius squared. you will have to calculate the radius using the initial circumference and then the radius again for the new circumference (with the 50 added). then calculate an area for each radius..then you can see the increase.