The circumference of a sphere of radius 2 is 12.56 square unit
Solution:
Need to determine circumference of the sphere of radius 2.
As sphere is three dimension object and circumference is attribute of two dimension object , here circumference of the sphere means circumference of spheres largest circle which contains the center of the circle.
Circumference of circle = 2πr
where π is a constant having value as 3.14 and r is radius of the circle.
In our case radius = r = 2 unit, as π is constant it will be 3.14 in all the cases
Substituting value of r and πin formula of circumference, we get
Circumference =
= 12.56 square unit.
Another Method:
The Circumference of a sphere is equal to 6.2832 times the Radius
Thus Circumference =
= 12.56 square unit