The area of a circle whose radius is 10 cm is _____.

The area of a circle, whose radius is 14 cm, is :

The area of a circle whose radius is 6cm, is trisected by two concentric circles.Find the radius of the smallest circle.

Find the area of circle whose radius is 25 m

The radius of two circles are in the ratio 3 : 4 and sum of their areas is equal to the area of a circle whose radius is 35 cm. Find the radius of these two circles.

The area of circle whose radius is 6 cm is trisected by two concentric circles. The radius of the smallest circle is

The radius of two circles are in the ratio 3 : 4 and sum of their areas is equal to the area of a circle whose radius is 35 cm. Find the ratio of the areas.

The radius of two circles are in the ratio 3 : 4 and sum of their areas is equal to the area of a circle whose radius is 35 cm. Find the ratio of the circumference.

The radius of two circles are in the ratio 3 : 4 and sum of their areas is equal to the area of a circle whose radius is 35 cm. Find the ratio of the diameters.

The area of a circle of radius 7 cm is ________ cm^(2) .