Question

How to find the perimeter of a triangle with only the area?

Answer 1

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Here we will discuss about the area and perimeter of the triangle.

● If a, b, c are the sides of the triangle, then the perimeter of triangle = (a + b + c) units. 

● Area of the triangle = √(s(s - a) (s - h) (s - c)) 

The semi-perimeter of the triangle, s = (a + b + c)/2

● In a triangle if 'b' is the base and h is the height of the triangle then

Area of triangle = 1/2 × base × height 

Similarly, 





                              1/2 × AC × BD                              1/2 × BC × AD

● Base of the triangle = (2 Area)/height 

● Height of the triangle = (2 Area)/base 


Area of right angled triangle

● If a represents the side of an equilateral triangle, then its area = (a²√3)/4 




● Area of right angled triangle

A = 1/2 × BC × AB 

   = 1/2 × b × h 












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