Question

8. If the triangle ABC in the Question 7 above is revolved about the side 5 cm, then find
the volume of the solid so obtained. Find also the ratio of the volumes of the two
solids obtained in Questions 7 and 8.​

Answer 1

Answer:

Here r=12,

h=5

⇒v=

3

1

πr

2

h=

3

π

(144)×5=

3

720

π

Ratio =

720π

100π

×3=

72

30

=

12

5

.