• 

• 7 cm²
  

• 3 cm²

• 3 cm²

• 2 units  
• 11 units
• 4 units 
• 4 units 

A chord of circle of radius 10 cm subtends a right angle at the centre. The area of minor segment APBA is (Fig. 12.92).

• 28 cm²  
• 28.2 cm²
• 28.5 cm²  
• 28.5 cm²  

In Fig.  find the area of the shaded region, enclosed between two concentric circles of radii 7 cm and 14 cm where ∠AOC = 40°. (use π =22/7)

165.

In the given figure, a triangle ABC is drawn to circumscribe of radius 3 cm, such that the segments RD and DC are respectively of length 6 cm and 9 cm. If the area of ΔABC is 54 cm², then find lengths of sides AB and AC.

Find the area of the minor segment of a circle of radius 14 cm, when its central angle is 60°. Also find the area of the corresponding major segment.  [ use π = 22/7 ]

In Fig., AB and CD are two diameters of a circle with centre O, which are perpendicular to each other. OB is the diameter of the smaller circle. If OA = 7 cm, find the area of the shaded region.  $\left|\mathrm{Use} \mathrm{\pi } = \frac{22}{7}\right|$

In Figure 2, ABCD is a trapezium of area 24.5 sq. cm. In it, AD|| BC, $\angle$ DAB = $90°$, AD = 10 cm and BC = 4 cm. If ABE is a quadrant of a circle, find the area of the shaded region.    $\left[\mathrm{Take} \mathrm{\pi }= \frac{22}{7}\right]$                  

In Figure, two concentric circles with centre 0, have radii 21 cm and 42 cm. If ∠ AOB = 60°, find the area of the shaded region.  $\left[\mathrm{Use} \mathrm{\pi } = \frac{22}{7}\right]$