Question

sebuah topi berbentuk kerucut dengan panjang diameter 18 cm dan tinggi topi tersebut 20cm berapakah volume nya​

Answer 1

The area of the cone is "1,695.6 cm³".

Explanation:

The given values are:

Diameter of cone,

d = 18 cm

then,

Radius,

r =
`(d)/(2)`

=
`(18)/(2)`

=
`9 \ cm`

Height,

h = 20 cm

As we know,

⇒ Area of a cone =
`(1)/(3) \pi r^2 h`

On substituting the given values in the above formula, we get

⇒ =
`(1)/(3)* 3.14* (9)^2* 20`

⇒ =
`(1)/(3)* 3.14* 81* 20`

⇒ =
`3.14* 27* 20`

⇒ =
`1,695.6 \ cm^3`