The radius of a circle is 7 cm. Find its area

The radius of a circle is 4.7 cm. Find its circumference

The radius of a circle is 14 cm. Find the radius of the circle whose area is double of the area of the circle.

The radius of a circle is 14cm. Find the radius of the circle whose area is double of the area of the circle.

The radius of a circle is 14 cm and the area of the sector is 102.7 cm^(2) . Find the central angle of the sector.

The radius of a circle is 14 cm and the area of the sector is 102.7 cm^(2) . Find the central angle of the sector.

The radius of a sphere is 7 cm. Find its surface area.

The radius of a circle is 14 cm.If the area of a sector of the circle is 102.7cm^2 ,then find the angle made by the sector at its centre.