Divide the area by half the base.
The relation between the height of a triangle, its base and its area is given by: Area = 0.5 * Base * Height Therefore, we have: Height = (2 * Area)/ Base.
Divide the area by height then you get the base.
area of a triangle = 1/2 base x height ie times the area by two then divide by the base = height
The height has not been given but the area of the triangle is: 0.5*height*base
The area of the triangle is 1/2*bh. So if you know the height and the base just plug in the values.
You don't have enough information. But if you have the base and the area, you can solve the equation for the area of the triangle for the height.
By using sides we get area of triangle and then using (1/2)heightxbase we get height.
That will depend on the height of the triangle which has not been given. Base = (84*2)/height
Area = 1/2*Base*Height so Base = 2*Area/Height
Area of any triangle is: 0.5*base*height
It is impossible to find the area of a triangle with no height, if the triangle had no height it would not even be a triangle, just a angle.
It is possible depending on what type of triangle it is. For instance if it was an equilateral triangle then all sides would be equal and then by means of Pythagoras' theorem you could work out the height of the triangle and using the formula: 1/2*base*height = area