In Fig 31, `A B C D` is a rectangle with dimensions 32 m by 18 m. `A D E` is a triangle such that `E F_|_A D` and `E F=14\ c mdot` Calculate the area of the shaded region.

In Figure, A B C D is a rectangle with sides A B=10 c m\ a n d\ A D=5c mdot Find the area of E F G

In Fig. 15.82, A B C D is a rectangle, having A B=20\ c m and B C=14\ c m . Two sectors of 180o have been cut off. Calculate: (i) the area of the shaded region. (FIGURE) (ii) the length of the boundary of the shaded region.

In Figure, A B C D is a rectangle in which C D=6c m ,\ A D=8c mdot Find the area of parallelogram C D E F

In Fig. 15.63, A B C D is a trapezium with A B D C and /_B C D=60o . If B F E C is a sector of a circle with centre C and A B=B C=7\ c m and D E=4\ c m , then find the area of the shaded region (U s e\ \ pi=(22)/7\ a n d\ sqrt(3)=1. 732) .

In Fig.38, A B C D\ and \ P Q R C are square such that A D=22\ c m\ a n d\ P C=y\ c mdot If the area of the shaded region is 403\ c m^2, then the value of y is (a)3 (b) 6 (c)9 (d) 10

In Fig. 15.93, A B C D is a rectangle with A B=14\ c m and B C=7\ c m . Taking D C ,\ B C and A D as diameters, three semi-circles are drawn as shown in the figure. Find the area of the shaded region. (FIGURE)

In the given figure, A B C D is a rectangle with A D=4 units and A E=E BdotE F is perpendicular to D B and is half of D F . If the area of the triangle D E F is 5 sq. units, then what is the area of A B C D ? 18sqrt(3) sq. units (b) 20 sq. units (c) 24 sq. units (d) 28 sq. units

In Fig. 15.75, O E=20\ c m . In sector O B F T , square O E F G is inscribed. Find the area of the shaded region. (FIGURE)

In Fig. 71, if A B C D\ a n d\ C D E F ,\ find \ /_A C E

In Fig. 32, A B C D is a rectangle of length A B=40\ c m and breadth B C=25\ c mdot If P , Q , R , S be the mid-points of the sides A B ,\ B C ,\ C D\ and \ D A respectively, find the area of the shaded region.