The area of a circle that has a radius that is given as r is πr² units², while if the raidus is r, its area would be π units².
Area of circle = πr², where radius is r.
Thus, given that a circle has radius (r) = 1 units
Area of the circle = π(1²) = π units²
If the radius is given as r, the area of the circle remains as πr².
Therefore, the area of a circle that has a radius that is given as r is πr² units², while if the raidus is r, its area would be π units².
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