The adjoining figure shows a rectangle and a semicircle. The perimeter of the shaded region is

1. 70 cm

2. 56 cm

3. 78 cm

4. 46 cm

The area of the shaded region shown in the below figure is

1. 140 cm²

2. 77 cm²

3. 294 cm²

4. 217 cm²

The perimeter of the shaded region shown in the below figure is

1. 44 cm

2. 88 cm

3. 66 cm

4. 132 cm

In the adjoining figure, ABC is a right angled triangle at B. A semicircle is drawn on AB as diameter. If AB = 12 cm and BC = 5 cm, then the area of the shaded region is

1. (60 + 18π) cm²

2. (30 + 36π) cm²

3. (30 + 18π) cm²

4. (30 + 9π) cm²