Icosahedron Calculator | Edge length, Surface Area, Volume, Exsphere, Midsphere, Insphere Radius

About This Tool:

Here you can find the edge length, surface area, volume, exsphere radius, midsphere radius and insphere radius of Icosahedron using this Icosahedron tool.

Icosahedron Formula:

Surface Area (A) = 5 * a² * √3
Volume (V) = 5 / 12 * a³ * ( 3 + √5 )
Exsphere Radius r_e) = a / 4 * √10 + 2 * √5
Midsphere Radius (r_m) = a / 4 * ( 1 + √5 )
Insphere Radius (r_i) = a / 12 * √3 * ( 3 + √5 )
Volume diagonal = 2 * r_e

Icosahedron Calculator

Edge Length (a) :
Volume (V) :
Surface Area (A) :
Exsphere Radius (re) :
Midsphere Radius (rm) :
Insphere Radius (ri) :
Round to   4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15   decimal places.
	* Enter any one known value

Heron Triangle Area Calculator | Heron Formula Solver for Given 3 Sides

Heron's formula calculator / solver. Online Triangle Calculator calculates area of a triangle by using Heron's formula for given 3 (three) sides. Heron's calculator calculates area of triangle for given 3 (three) sides.

Heron's formula for the area of a triangle with sides of length a, b, c is

Where,

Heron Triangle Area calculation for given 3 unknown side values.

Enter the length of A:		Meters
Enter the length of B:		Meters
Enter the length of C:		Meters
Area is of Triangle is :		Sq Meters

Did Heron Triangle calculator works wrong? Report us

Example:-
 A triangle with side a: 6m, side b: 7m, and side c: 8m. Calculate triangle's area using Heron's formula.

A=6m ; B=7m ; C=8m ;

Step 1: S = (6+7+8)/2 = 10.5
Step 2:     A = √(10.5) = 20.333162...

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Rectangle Area Calculator

Rectangle Area Calculator

Rectangle Area Calculator. The online "Rectangle Area Calculator" is used to calculate the area of a rectangle. The area of all rectangle is equal to the product of the length multiplied by the width.

Formula:-

Area of rectangle A = (length)(width)

        Enter the length (L)     Feet

         Enter the width (W)    Feet

           Area of Rectangle    Ft²  

                                          

Example:-

Find the area of a rectangle that has a length of 5 feet and width of 3 feet?

Area of Rectangle = length x width 

                              = 4ft x 3 ft

Area of Rectangle = 12 ft²



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