Question

if the height of the cone is doubled and the radius of the base is kept the same as before find the change in volume​

Answer 1

Answer:

See,

Volume of cone =

$\pi r {}^{2} h \div 3$

So,

You can neglect Pi and Divided by (3)

So,

Volume of new cone = r

$r {}^{2} 2h$

(neglecting pi and 3)

Now, change in volume is

2 times that of the Original one.