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Area 12 of 13
I know that for a isoceles triangles = and = . From this find out of the isoceles triangles.

 
 
SolutionIsoceles Triangle FormulaArea Formula
Area of Isoceles Triangle
Height `(h) = sqrt(a^2 - b^2/4)`
Perimeter `(P) = 2 a + b`
Area `(A) = (b h)/2`

Example :
I know that for a isoceles triangles a = 5 and b = 6 . From this find out Area of the isoceles triangles.

`"Here base " (b) = 6" and equal side " (a) = 5" (Given)"`


`"We know that,"`

`"Perimeter" = (2 * "equal Side") + "third Side"`

` = (2 * a) + b`

` = (2 * 5) + 6`

` = 16`


`"We know that,"`

`"Area" = 1/2 * "base" * "height"`

` = 1/2 * b * sqrt(a^2 - b^2/4)`

` = 1/2 * 6 * sqrt(5^2 - 6^2/4)`

` = 1/2 * 6 * 4 `

` = 12`


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