SSC CGL 2022 PYQ — Question 57

The correct answer is Option 2. i.e. 750.

Diameter of the lead shot = 8.4 cm

Radius of the lead shot = 8.4 / 2 = 4.2 cm

Number of spherical lead shots = (Volume of the rectangular solid / Volume of the lead shot)

Number of spherical lead shots = $\left ( \frac{length\times breadth\times height}{\frac{4}{3}\pi r^{3}}\right )$

Number of spherical lead shots = $\left ( \frac{88\times 63\times 42}{\frac{4}{3}\pi (4.2)^{3}}\right )$

Number of spherical lead shots = $\frac{232848}{310.464}$

Number of spherical lead shots = 750