Areas Related to Circles

From a circular sheet of radius 14 cm, a sector of angle 90° is removed. The area of the remaining sheet is: (Use π = 22/7)

The area of a sector is 1/6 of the area of the circle. The sector angle is:

If the area of a sector is 231 cm² and the arc length is 22 cm, the radius of the circle is:

A circle of radius 14 cm has two chords AB and CD of equal length, each subtending 90° at the centre and on opposite sides. The area of the region between the two chords (double segment) is: (Use π = 22/7)

A circular arc of radius 7 cm has length equal to the circumference of a circle of radius 3.5 cm. The angle of the arc is: (Use π = 22/7)