If the difference between the circumference and the diameter of a circle is 30 cm, the circumference of the circle is :

1. 44 cm

2. 45 cm

3. 46 cm

4. 48 cm

If the area of the inscribed circle of a square is 154 cm², then the area of a square is :

1. 190 cm²

2. 192 cm²

3. 196 cm²

4. 198 cm²

There is a road of equal width all around a circular garden. The outer and inner circumferences of the road are 328 m and 200 m respectively. The area of the road will be :

1. 5376 m²

2. 5375 m²

3. 5374 m²

4. 5373 m²

The diameter of the front wheel and the rear wheel of the cycle are 70 cm and 168 cm respectively. In covering a certain distance, the front wheel makes 600 revolutions. The number of revolutions made by the rear wheel to cover the same distance is :

1. 248

2. 250

3. 252

4. 254