Question : The curved surface area of a right circular cone is 44 cm². If the slant height of the cone is 7 cm, then find the radius of its base. [Use $\pi=\frac{22}{7}$ ]

Option 1: 2 cm

Option 2: 4 cm

Option 3: 3 cm

Option 4: 5 cm

Question : The curved surface area is thrice as big as the base area of a cone. If the diameter of the cone is 1 cm. Then what is the total surface area (in cm²) of the cone?

Option 1: $\pi$

Option 2: $3\pi $

Option 3: $2\pi$

Option 4: $4\pi $

Question : The curved surface area of a cylinder is 968 cm². If the height of the cylinder is 11 cm, then what will be the diameter of its base?

Option 1: 26 cm

Option 2: 22 cm

Option 3: 28 cm

Option 4: 24 cm

Question : The slant height and the radius of a right circular cone are 11 cm and 6 cm, respectively. What is the curved surface area of the cone?

Option 1: $74 \pi\; {cm}^2$

Option 2: $60 \pi \;{cm}^2$

Option 3: $44 \pi\; {cm}^2$

Option 4: $66 \pi \;{cm}^2$

Question : The radius of a right circular cylinder is 7 cm. Its height is thrice its radius. What is the curved surface area of the cylinder?

Option 1: 724 cm²

Option 2: 666 cm²

Option 3: 924 cm²

Option 4: 264 cm²