Question

find the volume of cone whose slant height is 8cm and radius is 4cm.​

Answer 1

Answer:

Step-by-step explanation:

Volume of cone=1/3πr^2h

L=10

r=4

To calculate h use formula,

h=√l^2-r^2

h=√100-64

h=√36

h=6

Now using formula of volume of cone

We get,

1/3*22/7*4*4*6

704/7

Answer 2

Answer:

116.0831cm.sq

Step-by-step explanation:

height of the cone = 8cm

radius of the cone = 4cm

$V=\pi r^2\frac{h}{3}$

$l=\sqrt{r^2+h^2}$

$V=\frac{1}{3} \pi r^2\sqrt{l^2-r^2}\\ = \frac{1}{3}\pi .4^2\sqrt{8^2-4^2} \\=116.0831cm^2$