It depends on the information available to you.
The answer will depend on whether the length is the hypotenuse or one of the legs of the triangle.
I don't think it is possible. You would have to know at least one other measurement such as the angle between the length and width or the length of one of the sides.
No, not a triangle.
You first multiply the length and the width, the you divide it by 2.
it's easy, length x width divided in half.
You cannot since there is not enough information.
The answer is 27
Rectangle: length x width triangle: (base x height)/2
The area of a right angled triangle would be .5 * length *width where the length is the height of the triangle. To find the height of the triangle, take the sine of 45 degrees, which is the degree of the angles other than the 90 degrees, and multiply it by the length of one of the two equal sides. The width of the triangle is the length of the bottom side.
To find the length of a triangle or what ever shape your trying to find all you have to do is multiply width times the area. * * * * * Or, if you want the correct answer, you could try to divide the area by the width. That assumes the shape is a rectangle and that the area and width are known!
my idea is that to find the area of a 2 dimensional figure you have to multiply length *width which equal the area except a triangle and some other figure