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 radius of the base of a cylinder is 14 cm and its curved surface area is 880 cm². Its volume (in cm³) is: (Take $\pi=\frac{22}{7}$)

Option 1: 3080

Option 2: 1078

Option 3: 6160

Option 4: 9240

Question : The radius of the base of a cylinder is 14 cm and its volume is 6160 cm³. The curved surface area (in cm²) is: (Take $\pi=\frac{22}{7}$)

Option 1: 778

Option 2: 880

Option 3: 660

Option 4: 940

Question : The total surface area of a right circular cylinder is 1848 cm². The ratio of its total surface area to the curved surface area is 3 : 1. The volume of the cylinder is: (Take $\pi=\frac{22}{7}$)

Option 1: 4312 cm³ 

Option 2: 3696 cm³ 

Option 3: 4002 cm³ 

Option 4: 4851 cm³ 

Question : What is the radius of a normal cylinder whose height is 21 cm and curved surface area is 1386 cm²?

Option 1: 10.5 cm

Option 2: 3.5 cm

Option 3: 7 cm

Option 4: 10 cm