Respuesta :

let the height = x

Base = 2x

Area of triangle = (1/2)*base*height

Area = (1/2)*2x*x = 4 

x² = 4

x = √4

x = 2

Height = 2 km.

The height of the triangle is 2 kilometer.

A triangle is a 3-sided polygon. The sum of the angles in a triangle add up to 180 degrees. The sides of a triangle are the length, base and the hypotenuse.

The area of a triangle = [tex]\frac{1}{2}[/tex] × base × height

Let:

t represent the height of the triangle.

Base = 2 x t = 2t

Area = 4

4 =  [tex]\frac{1}{2}[/tex] × 2t x t

Multiply both sides of the equation by 2

8 = 2t²

Divide both sides by 2

4 = t²

Find the square root of both sides of the equation

t = 2 kilometer.

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