Question : The radius of a solid right circular cone is 36 cm and its height is 105 cm. The total surface area (in cm²) of the cone is:

Option 1: $4296 \pi$

Option 2: $3996 \pi$

Option 3: $5292 \pi$

Option 4: $3969 \pi$

Question : The slant height of a cone is 20 cm. If the area of its base is 616 cm², then what is the curved surface area of this cone? (use $\pi=\frac{22}{7}$)

Option 1: 960 cm²

Option 2: 400 cm²

Option 3: 1760 cm²

Option 4: 880 cm²

Question : If the slant height of a cone is 60 cm and the radius of its base is 21 cm, then find its curved surface area is? (use $\pi=\frac{22}{7}$)

Option 1: 3880 cm²

Option 2: 3820 cm²

Option 3: 3960 cm²

Option 4: 4020 cm²

Question : The circumference of the base of a right circular cone is 44 cm and its height is 24 cm. The curved surface area (in cm²) of the cone is: (Take $\pi=\frac{22}{7}$)

Option 1: 528

Option 2: 572

Option 3: 550

Option 4: 440

Question : The curved surface area of a right circular cone of a base radius of 21 cm is 594 sq. cm. What is the slant height of the cone?

Option 1: 15 cm

Option 2: 11 cm

Option 3: 9 cm

Option 4: 6 cm