Question

I need help . calculate the area of triangle ,2d.m

Answer 1

A ≈ 32.03 m²

Explanation:

since the 3 sides are congruent then the triangle is equilateral.

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

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

=
`(8.6^2√(3) )/(4)`

=
`(73.96√(3) )/(4)` ( divide numerator/denominator by 4 )

= 18.49 ×
`√(3)`

≈ 32.03 m² ( to 2 decimal places )