Question

12. A 15 m tall pillar consists of two parts as shown in Fig. 16.4.
The diameters of the base at the bottom and the top-most
circular disc are in the ratio 4:3. If the total area of the curved
surfaces of both the parts of the piller is 110 m², find the
radius of each portion of the pillar,
N​

Answer 1

Answer:

It is from your textbook.