question_answer

A right angled triangle whose base is 21 cm and height is 20 cm, is made to turn round on the longer side. If the volume of the solid, thus generated V and the curved surface area is S, then __________

A)  \[V=9240\text{ }c{{m}^{3}},\text{ }S=1914\text{ }c{{m}^{2}}\]   

B)  \[V=8820\text{ }c{{m}^{3}},\text{ }S=1885\text{ }c{{m}^{2}}\]

C)  \[V=3820\text{ }c{{m}^{3}},\text{ }S=1685\text{ }c{{m}^{2}}\]

D)  \[V=8240\text{ }c{{m}^{3}},\text{ }S=1734c{{m}^{2}}\]

E)  None of these