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

If the total cost of mowing a circular field at the rate of ₹1.20 per square metre is ₹4,620, then the cost of fencing the field at the rate of ₹4 per metre is :

1. ₹ 878

2. ₹ 880

3. ₹ 882

4. ₹ 884

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

Case Study
Mr Ranveer lives in Agra. He purchased a rectangular plot ABCD to build a house. He leaves a rectangular area ADEF for parking and two congruent semicircular areas to make lower beds, as shown in the figure.

Based on the above information, answer the following questions:

1. Area of the plot left for parking is:
   (a) 24 m²
   (b) 48 m²
   (c) 60 m²
   (d) 63 m²

2. Diameter of each semi-circle is:
   (a) 21 m
   (b) 10.5 m
   (c) 7 m
   (d) 3.5 m

3. Total area of the two semi-circular flower beds is :
   (a) 80.6 m²
   (b) 82.625 m²
   (c) 86.625 m²
   (d) 90.625 m²

4. Area of the plot BCEF is :
   (a) 441 m²
   (b) 400 m²
   (c) 380 m²
   (d) 350 m²

5. Total length of the two semi-circular arcs is :
   (a) 33 m
   (b) 35 m
   (c) 16.5 m
   (d) 54 m