Question

EXERCISE 13.3
1. Find the total surface area of a cone with
diameter 6 cm and slant height Hem.
2. Find the curved surface area and the total
surface area of a cone with radius 3.5 cm
and height 12 cm.
3. In A ABC. ZB = 90° AB = 28 cm and
BC =
= 21 cm. It is revolved about the side
AB. Find the curved surface area of the cone
so obtained. Similarly, the triangle ABC is revolved about the side BC , then find the curved surface area of the cone so obtained
​

Answer 1

Step-by-step explanation:

1) The total surface area of a cone is 131.94 cm.

2)264cm³