Question

What is the radius of a circle with an area of π/4 square units?

Answer 1

The radius of a circle with an area of π/4 square units is B. 0.5 units

What is an area?

Area is the quantity that expresses the extent of a region on the plane or on a curved surface. The area of a plane region or plane area refers to the area of a shape or planar lamina, while surface area refers to the area of an open surface or the boundary of the three-dimensional object.

Now it is given that,

Area of circle =  π/4 square units

Since we know that,

Area of circle =  πr²

where r is the radius of circle.

⇒ r² =  Area of circle / π

Put the values we get,

⇒ r² = (π/4)/ π

⇒ r² = 1/4

Taking square root both the side we get,

⇒ r = 1/2 units

or,  r = 0.5 units

Thus, the radius of a circle with an area of π/4 square units is B. 0.5 units

To learn more about radius :

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