Question

What is the area of an equilateral triangle that has a side length of 4?

Answer 1

`A= 6.93` or `4sqrt3`

Explanation:

`A=sqrt3/4a^2`

a`rarr` side which `4`

`A=sqrt3/(4)4^2`

`A=sqrt3/(4)16`

`A=(16sqrt3)/4`

`A=(cancel4(4)sqrt3)/cancel4`

`A=4sqrt3`

`sqrt3` `rarr` `1.73205080757`

`4sqrt3 = 6.92820323028`

`A= 6.93`