Question

A toy is in the form of a cone surmounted on a hemisphere. The diameter of the base and height of the cone are 12 cm and 8 cm, respectively. Determine the ratio of the surface area of the hemisphere to the surface area of the cone

Answer 1

Step-by-step explanation:

Radius of the hemisphere = 3.5 cm, as shown in the above figure. Height of the cone (h) = height of the toy – radius of the hemisphere. So, the height of the cone (h) = 15.5 – 3.5 = 12 cm.