The problem statement "The smaller cone which is" is incomplete. To solve the problem, we must assume a dimension for the smaller cone. A common assumption in such problems is that the height of the s

The problem statement "The smaller cone which is" is incomplete. To solve the problem, we must assume a dimension for the smaller cone. A common assumption in such problems is that the height of the smaller cone is a specific value, or that the frustum has a specific height.

Assumption: We will assume that the height of the smaller cone ($h$) is 10 cm. This means the frustum has a height of $30 \text{ cm} - 10 \text{ cm} = 20 \text{ cm}$.

Given:
Large cone:
Radius ($R$) $= 12$ cm
Height ($H$) $= 30$ cm

Smaller cone:
Height ($h$) $= 10$ cm (Assumed