What is formula surface area for a cone?

Answer 1

Including the base, π r^2 + πrs where s = slant height and r = radius

Answer 2

Total surface area of cone is area of base + surface area of cone,
= π r^2 + π r l where l is slant height and r = radius

Answer 3

Let h = height of cone, r = radius of base, ℓ = slant length.
You need r and ℓ to calculate surface area. Given two of the three variables, you can determine the third using the Pythagorean theorem.

lateral area = π(r)(ℓ)
base area = π(r²)
total surface area = lateral area + base area

Answer 4

For curved surface area the farmula is :
CSAcone=pi*r*l or where r=radius, l=slant height.
But if slant height is not given then thefarmula will be
CSAcone=pi*r*root (h^2+r^2) because
slant height l=root(h^2+r^2) and h=height of the cone...

For total surface area farmula is :
TSAcone=pi*r(r+l)

Answer 5

let the height be h and the radius r.
let s be the slant height of the cone (s = sqrt(r^2+h^2))

the area of the base circle is pi r^2
the lateral area of the cone is pi r s

Answer 6

My computer won't allow me to make all the symbols, but according to a college algebra textbook, here's the formula:

Surface area, S, equals 2, times pi, times the radius squared plus 2 times pi, times the radius, multiplied by the height, or:

S=2 (pi)r squared + 2 (pi)rh

Sure hope that helps!

Answer 7

π r^2 + π r l, where, TT=22/7, r=radius,l=slant height and slant height=actual height^2 + base^2