Question

If perimeter of an equilateral triangle is 12cm , find its area

Answer 1

Heya friends....^_^

Here is ur answer...⏺

⏸...As we know that the perimeter of Equilateral triangle=3a....【where a is side 】

now,

3a=12

a=4 cm...

now ...As we know that the area of Equilateral triangle

=√3a^2/4

=√3*4^2/4

=16√3/4

=4√3cm^2 Ans .

Hope it help you..

@Rajukumar☺☺☺

Answer 2

If the perimeter is 12 cm of a equilateral triangle
P= 3*a ( a=one side) ( EquilateralΔ have equal sides)

12= 3*a
a = 12/3
a= 4 cm


Area of the Δ = √3/4 × a^2
A= √3/4 × 12^2
A= √3/4 ×24
A = 6√3cm^2

area is 6√3 cm^2 ........


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