Question

The perimeter of an equilateral triangle is 36cm,then find the area of the triangle.

Answer 1

Solution :

Let side of an equilateral

triangle = a

Perimeter (P) = 36cm

=> 3a = 36 cm

=> a = 36/3

=> a = 12 cm

Now ,

Area of an equilateral

triangle (A) = ( √3/4 )a²

= (√3/4 )×12²

= (√3 ) × 12 × 3

= 36√3 cm²

Therefore ,

A = 36√3 cm²

••••

Answer 2

Answer:

Step-by-step explanation:

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