Question : The volume of a solid sphere is $4500 \pi \;cm^3$. The surface area of the solid sphere is:

Option 1: $700 \pi\; \text{cm}^2$

Option 2: $850 \pi\; \text{cm}^2$

Option 3: $900 \pi\; \text{cm}^2$

Option 4: $810 \pi\; \text{cm}^2$

Question : A sphere is of radius 5 cm. What is the surface area of the sphere?

Option 1: $100 \pi \;\mathrm{cm^2}$

Option 2: $150 \pi \;\mathrm{cm^2}$

Option 3: $200 \pi\;\mathrm{cm^2}$

Option 4: $120 \pi\;\mathrm{cm^2}$

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 $