Question

Triangle ABC is an equilateral triangle with AC =8; find the area of this triangle​

Answer 1

AC= 8 cm

all sides are equal in an equilateral triangle.

therefore, ab=bc=ca

area of equilateral triangle = √3/4 x s^2

= √3/4 x 8^2

= √3/4 x 64

= √3 x 16

= √3= 1.732

= 1.732 x 16

= 27.712

therefore, area of triangle is 27.712 cm^2