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
When right-angled ΔABC is revolved about its side 5 cm a cone will be formed
Radius (r) = 12 cm
Height (h) = 5 cm
Slant height (l) = 13 cm
Volume = 
r2h
= 
* 
* 12 * 12 * 5
= 240 
cm3
Ratio = 
= 
= 5: 12
14