Question : The diameter of a sphere is 14 cm, then the volume of this sphere is (use $\pi=\frac{22}{7}$ ):

Option 1: $1437 \frac{1}{3} \mathrm{~cm}^3$

Option 2: $1683 \frac{1}{3} \mathrm{~cm}^3$

Option 3: $1521 \frac{2}{3} \mathrm{~cm}^3$

Option 4: $2125 \frac{1}{3} \mathrm{~cm}^3$

Question : If a right circular cone of height 24 cm has the circumference of its base 42$\pi$ cm, then the volume of the cone is: (Use $\pi=\frac{22}{7}$)

Option 1: 15211 cm³

Option 2: 11088 cm³

Option 3: 12034 cm³

Option 4: 21011 cm³

Question : Find the surface area of a sphere whose radius is 3.5 cm. Use $(\left.\pi=\frac{22}{7}\right)$.

Option 1: 154 cm²

Option 2: 152 cm²

Option 3: 146 cm²

Option 4: 160 cm²

Question : The total surface area of a solid hemisphere of diameter 14 cm is (use $\pi=\frac{22}{7}$ ):

Option 1: 522 cm²

Option 2: 462 cm²

Option 3: 428 cm²

Option 4: 584 cm²

Question : If the height and slant height of a cone are 21 cm and 29 cm, respectively. Find its volume. (Use $\pi=\frac{22}{7}$)

Option 1: 8800 cm³

Option 2: 8708 cm³

Option 3: 8440 cm³

Option 4: 8080 cm³