There are different formulae, depending on what you DO know. Here you will find several: http://en.wikipedia.org/wiki/Triangle#Computing_the_area_of_a_triangle
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You find the height by using Pythagoras' theorem and then 0.5*base*height = area.
Without knowing its base its almost impossible to give a correct answer.
-- Imagine what you have if you slice the triangle in half along the height ...-- You have a right triangle. One side of it is 1/2 of the base, and one side isthe height.-- The slanting side is the hypotenuse of the right triangle, and knowing whatyou know about right triangles, you can calculate its length.-- Once you do that, you have the lengths of all three sides of the original triangle,and you can calculate the perimeter.
Messure it,
The area of a triangle is base x height / 2. Height should be perpendicular to base.
You find the height by using Pythagoras' theorem and then 0.5*base*height = area.
Without knowing its base its almost impossible to give a correct answer.
-- Imagine what you have if you slice the triangle in half along the height ...-- You have a right triangle. One side of it is 1/2 of the base, and one side isthe height.-- The slanting side is the hypotenuse of the right triangle, and knowing whatyou know about right triangles, you can calculate its length.-- Once you do that, you have the lengths of all three sides of the original triangle,and you can calculate the perimeter.
Messure it,
I'm pretty sure that only works if it is an isosceles right triangle. In that case, use the Pythagorean theorem to calculate the base and height knowing only the hypotenuse. A2 + B2 = C2. A=B= height= base. C= hypotenuse
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The area of a triangle is base x height / 2. Height should be perpendicular to base.
The answer depends on what information you do have about it.
The area of a triangle can be calculated using the formula: Area = 0.5 x base x height. Given the base is 12cm and the height is unknown, the area cannot be determined without the height measurement. To find the area, you would need to know the specific value of the height in order to plug it into the formula and calculate the area of the triangle accurately.
It's simple. Measure it!
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.
the equation for a triangle is 1/2base*height knowing that it's a simple equation solving for a single unknown.