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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]