The Total solution for NCERT class 6-12
Ifthe lateral surface of a cylinder is 94.2 cm2┬аandits height is 5 cm, then find (i) radius of its base (ii) its volume. [Use ╧А =3.14]
(i)Height (h)of cylinder = 5 cm
Let radius ofcylinder be┬аr.
CSA of cylinder =94.2 cm2
2╧Аrh┬а=94.2 cm2
(2 ├Ч 3.14 ├Ч┬аr┬а├Ч5) cm = 94.2 cm2
r┬а= 3 cm
(ii) Volume ofcylinder = ╧Аr2h
= (3.14 ├Ч (3)2┬а├Ч 5) cm3