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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]