Find the area of an equilateral triangle with a side of 6 inches

15.59 inches²

Step-by-step explanation:

Area of a triangle = (base) × (height)

Base of the triangle = 6 inches = BC

so BD = CD = 3 inches

Now height h = AD = [ By Pythagoras theorem ]

h =

=

=

Now area of equilateral triangle ABC

=  (6) ( )

= 3 ×  ()

=   inches²

≈ 15.59 inches²

351.23

step-by-step explanation:

1. perpendicular

2. parallel

3. perpendicular