Question : The curved surface area of a cone whose base radius is 7 cm and slant height is 10 cm is:

Option 1: 280 cm²

Option 2: 250 cm²

Option 3: 300 cm²

Option 4: 220 cm²

Question : The total surface area of a solid metallic hemisphere is 462 cm². This is melted and moulded into a right circular cone. If the radius of the base of the cone is the same as that of the hemisphere, then its height is: (use $\pi=\frac{22}{7}$)

Option 1: 14 cm

Option 2: 7 cm

Option 3: 21 cm

Option 4: 28 cm

Question : What is the difference between the total surface area and the curved surface area of a cone whose radius is 35 cm? (Take $\pi=\frac{22}{7}$)

Option 1: 3850 cm²

Option 2: 3704 cm²

Option 3: 3750 cm²

Option 4: 3675 cm²

Question : What is the total surface area of a solid right circular cylinder of radius 7 cm and height 8 cm?$(\pi=\frac{22}{7})$

Option 1: 560 cm²

Option 2: 660 cm²

Option 3: 850 cm²

Option 4: 760 cm²

Question : The circumference of a circle exceeds its diameter by 60 cm. The area of the circle is: (Take $\pi=\frac{22}{7}$ )

Option 1: 1078 cm²

Option 2: 616 cm²

Option 3: 536 cm²

Option 4: 346.5 cm²