Question

Q3. If a radius of cylinder is doubled and the height remains same, the volume will be
a) Doubled
b) Halved
c) Same
d) Four times​

Answer 1

here,

For a cylinder

h is height

r is radius

so, Volume

V= πr²h----->(i)

if, radius is double

radius=2r

so, Volume=π(2r)²h

V*=4πr²h——>(ii)

From i and ii, we get

4V=V*

Hence, volume will be 4 times

Answer - d)

Answer 2

Answer:

@ doubled

because when radius &height is doubled the volume will be four time .but here it is only radius is doubled so the volume also double