The area of a circle is 394.24 cm2. Then the radius of the circle in cm is _______.
11.4
11.3
11.2
11.1
A = πr2
r = √Aπ = √394.24π = 11.2cm
A circle is inscribed inside a square of area 100cm2. Radius of the circle is ____________.
If the radius of a circle is 7√π cm, then find the area of the circle (in square cm).
The area of a circle is πd2, then the radius of the circle is ____.