Source: Exemplar
A cone is 8.4 cm high, and the radius of its base is 2.1 cm. It is melted and recast into a sphere. The radius of the sphere is:
Options
Option A
4.2 cm
Option B is correct
2.1 cm
Option C
2.4 cm
Option D
1.6 cm
A cone is 8.4 cm high, and the radius of its base is 2.1 cm. It is melted and recast into a sphere. The radius of the sphere is:
4.2 cm
2.1 cm
2.4 cm
1.6 cm