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the area of a triangle is base times height times one half and rectangle is length times width
It is not in all but a trivial sense - that they are both to do with finding the perimeter!
in finding the area if a square or rectangle multiply the length and width, for a triangle, multiply length and width divided by two.
120 inches (by finding the hypotenuse of a right triangle).
The term "rectangle method" is used in different ways in math, but I will guess that your question is related to finding areas on a Geoboard. A Geoboard has a grid of pegs; you can make outlines of figures by stretching elastic bands around the pegs. If your figure is a triangle, you can find it's area by making the smallest rectangle which will enclose the triangle (The rectangle should have vertical and horizontal sides). The area of the rectangle can be found easily by multiplying the length by the width. The area of the triangle is half of the area of the rectangle.
The formula for finding the perimiter of a rectangle is add up all of its sides
Picture a square. now make a line connecting the two diagonal points. If bh is the volume of the rectangle, then we only have half a rectangle for each right triangle giving 1/2 *bh or bh/2. For any other traingle put the base parallel to the ground. Make a perpendicular line to the ground then you have two parts of a triangle divided at a vertex. Each of the these parts has a right angle. Make a second triangle of the same size and if you turn it into the two triangle fromt he first triangle and cut it apart, you can manipulate it to make a rectangle. The two triangles are a rectangle which is bh. divide by two to get one triangle so 1/2*bh or bh/2
If a regular 2D shape - a square or rectangle - times the length by the width to get the area.If the shape is irregular than drawing squares inside the shape will aid in finding the total area. There are other ways worth studying.The area of a right-angle triangle is half the size of a rectangle or square. The triangle's base x side will give the area of the rectangle or square. Dividing by 2 will halve the rectangle or square, so giving the area of the right-angle triangle.
Area of a rectangle: a = l * w
you weigh it
L.A.= 2*pi*radius*height its not like finding the area of a rectangle. a cylinder is a 3-D shape and a rectangle is a flat shape
1. A practical application of Pythagoras Theorem is to check where the ploat or a building or land are in the form of a square or rectangle ( i.e. each corner angle is 90 degree or not ) 2. For finding the third side of a right angle triangle 3. Use of Trigometry i.e. sinx , cosx and tanx based on right angle triangle are used in finding the area of many geometrical figures like area of any triangle , rectangle etc. 4. many more ........