Question

the height of an equilateral triangle is 10 cm its area is

Answer 1

Let the side of triangle be x...

Given it's height be h = 10 cm

Now area of equilateral triangle is


1/2 × base × h = √3/4 × x × x
1/2 × 2 × 10 = √3/4 × x × x

X = (40/√3)^1/2 cm


Which the required answer..



Hope it helps regards SR

Answer 2

Heya User,

-->> Height of an equilateral Δ = ( √3 / 2 ) side
   => √3 / 2 * side = 10cm
   => 20√3 / 3 = side 

-->> Area of equilateral Δ = √3/4 ( side )² = ( √3 / 4 )[ 400 * 3 ]/9 
                                                                    = 100( √3 / 3 ) cm² 
 
^_^