Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

If an arc of a circle subtends an angle of measure 0 at the centre, then the area of the minor sector is…..

In figure 13.28, ABCD is a square with sides having length 8 cm. Find the area of the blue coloured region. (π = 3.14)

Figure 13.28

A circle is inscribed in APQR where m∠Q = 90, PQ = 8 cm and QR = 6 cm. Find the area of the blue coloured region shown in figure 13.29. (= 3.14)

Figure 13.29

Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

The area of a sector is given by the formula ….

(r is the radius and 1 is the length of an arc.)

Select a proper option (a), (b), (c) or (d) from given options and write in the box given on the right so that the statement becomes correct:

and are the two mutually perpendicular radii of a circle having radius 9 cm. The area of the minor sector corresponding to AOB is cm²( = 3.14)