Question

Please do it step by step​

Answer 1

A ≈ 6.93 cm²

Explanation:

the area (A) of an equilateral triangle is calculated as

A =
`(s^2√(3) )/(4)` ( s is the side length ) , then

A =
`(4^2√(3) )/(4)` =
`(16√(3) )/(4)` = 4
`√(3)` ≈ 6.93 cm² ( to 2 decimal places )