Question

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

Answer 1

Answer:

the area of triangle is 27.71 unit square

Step-by-step explanation:

given that AC(a)=8 unit

area of triangle=(√3/4)*a²

                         =(√3/4)*64

                         =16√3

                         =27.71unit square

Answer 2

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