SSC GD 2024 PYQ — Question 48

The correct answer is option 2 i.e. 89.83 cm³.

The volume (V) of a hemisphere is 

V = $\frac{2}{3} \pi r^3$

r is the radius of the hemisphere = 3.5 cm

⇒ V = $\frac{2}{3} \pi (3.5)^3$

⇒ (3.5)³  = 3.5 ×  3.5 × 3.5 = 42.875

⇒ V = $\frac{2}{3} \pi \times 42.875$

⇒ V = $\frac{2}{3} \times 3.1416 \times 42.875 \approx \frac{2}{3} \times 134.234$

⇒ V = 89.83 cm³