Question

if the side of an equilateral triangle is 8cm. then calculate its area

Answer 1

Length of each side of an equilateral triangle=
8cm
So it's area =(√3/4*8^2) cm^2=16√3 cm^2
Hence ,it's area is 16√3 cm^2.

Answer 2

Half into b into h is the area
We know that three sides of an equilateral triangle is equal
So b equal to 8
To find the height
First dvide the triangle into two halves
So formed a right angles triangle
Using pythagorem theorem u can find the height
To find altitude which is equal to height
A square = h square _ b square
=8 square_4 square bcoz it was divided
=64-16
=48
A= root of 48
A=6.9....
Area= half into 8 into 6.9
=27.6 cm square