Experience the power of community-driven knowledge on IDNLearn.com. Find reliable solutions to your questions quickly and accurately with help from our dedicated community of experts.

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

Sagot :

Answer:

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

Step-by-step explanation:

The given values are:

Diameter of cone,

d = 18 cm

then,

Radius,

r = [tex]\frac{d}{2}[/tex]

 = [tex]\frac{18}{2}[/tex]

 = [tex]9 \ cm[/tex]

Height,

h = 20 cm

As we know,

⇒  Area of a cone = [tex]\frac{1}{3} \pi r^2 h[/tex]

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

⇒                            = [tex]\frac{1}{3}\times 3.14\times (9)^2\times 20[/tex]

⇒                            = [tex]\frac{1}{3}\times 3.14\times 81\times 20[/tex]

⇒                            = [tex]3.14\times 27\times 20[/tex]

⇒                            = [tex]1,695.6 \ cm^3[/tex]