Cone Total Surface Area Calculator

(radius)


units

(slant height)


units

square units
View Calculation

How to use this Cone Total Surface Area Calculator 🤔

  1. Enter ✎ value for radius (r).
  2. Enter ✎ value for slant height (l).
  3. As soon as you enter the required input value(s), the Cone Total Surface Area is calculated immediately, and displaed in the output section (present under input section).

Formula

To calculate the cone total surface area, you can use the following formula.

\(A = \) \( π r l + π r ^{2} \)

where

Calculation

Once you enter the input values in the calculator, the output parameters are calculated.

Examples

The following examples cover how to calcualte the Total Surface Area when radius, and slant height are given.

1. What is the Total Surface Area of Cone whose radius is 20 units, and slant height is 10 units?

Answer

Given:

  • radius, r = 20 units
  • slant height, l = 10 units

The formula to find the Total Surface Area of a Cone is:

A = \( π r l + π r ^{2} \)

Substitute given values in the above formula.

A = \( ( 3.1415 \times20\times10) + ( 3.1415 \times20 ^{2} )\)

A = 1884.96 square units

∴ Total Surface Area, A = 1884.96 square units

2. What is the Total Surface Area of Cone whose radius is 1 units, and slant height is 0.5 units?

Answer

Given:

  • radius, r = 1 units
  • slant height, l = 0.5 units

The formula to find the Total Surface Area of a Cone is:

A = \( π r l + π r ^{2} \)

Substitute given values in the above formula.

A = \( ( 3.1415 \times1\times0.5) + ( 3.1415 \times1 ^{2} )\)

A = 4.71 square units

∴ Total Surface Area, A = 4.71 square units