What is the formula for findinding the Area & Volume of a cone?

Answer 1

The volume of a cone with base radius r and height h is:

V = 1/3 * pi * r^2 *h

This gives that the curved surface has surface area:

Area = pi * (h^2 + r^2) * [2 * pi * r] / [2 * pi * sqrt(h^2 +r^2)]
= pi * sqrt (h^2 + r^2) *r

The area of the bottom circle is of course pi * r^2 so the total
surface area of the cone is:

Area = pi * r * [sqrt (h^2 + r^2) + r]

I hope this helps you ^ is to the power and pi = 3.14159

:)

Answer 2

Cone Volume Theorem

The volume V of any cone with radius r and height h is equal to one-third the product of the height and the area of the base.

Formula: V = (1/3)(PI)r2h

Cone Area Theorem

The total area T of a cone with radius r and slant height l is equal to the area of the base plus PI times the product of the radius and the slant height.

Formula: T = (PI)rl + (PI)r2

Answer 3

Total surface area of a cone is pie*r(r+l),where pie=22/7,r=radisu of base and l=the slant height of the cone. Volume of a cone is1/3*pie *r^2h,where pie=22/7,r=radius of the base and h=vertical height of the cone

Answer 4

Volume of a cone = 1/3* pi * (radius)^2 * height
(Total) Surface area ofa cone = pi r l + pi r^
= pi r(l + r)
where r is radius, pi = 22/7 (approx.), l is slant height and h is height

Answer 5

V = hB/3

height*Base/3

Area = pi * r * [sqrt (h^2 + r^2) + r]