if a perimeter of an equilateral triangle is 120 cm, what will be its area
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3
Heya☺
Let the sides of equilateral triangle be x
Perimeter of triangle = Sum of all sides
x+ x+x =120
3x = 120
x= 40
Therefore the sides of equilateral triangle measures 40 cm
Area of equilateral triangle = √3/4 × side^2
= √3/4 × 40×40
= √3 ×400
= 400√3 cm^2
✌✌Hope this helps
Let the sides of equilateral triangle be x
Perimeter of triangle = Sum of all sides
x+ x+x =120
3x = 120
x= 40
Therefore the sides of equilateral triangle measures 40 cm
Area of equilateral triangle = √3/4 × side^2
= √3/4 × 40×40
= √3 ×400
= 400√3 cm^2
✌✌Hope this helps
Answered by
5
Hey there!
An equalateral traingle have equal sides.
So, each side = 120/3 = 40cm
Area = √3/4 × s²
√3/4 × 40 × 40
= 400 √3 cm
Hope helped.
An equalateral traingle have equal sides.
So, each side = 120/3 = 40cm
Area = √3/4 × s²
√3/4 × 40 × 40
= 400 √3 cm
Hope helped.
abhi569:
Wrong
It is wrong
Not totally..... But one main step is not complete
:0
where sir
In last
It should be 400√3 unit²
Here, unit =cm,,,, so it will be 400√3 cm²
unit? sorry for that. i will edit soon. :)) btw, thanks for saying :D
Its my pleasure
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