Area of a rectangle = (length of the rectangle) multiplied by (width of the rectangle)
Some irregular shapes can be broken down into a combination of rectangles. Think of a solid "L" shape. It might be difficult to find the area of that. But if you think of it as two rectangles, it's a lot easier.
Area of a rectangle: a = l * w
The answer depends on what information you have about the rectangle: the area and width, or width and diagonal, area and perimeter or some other measures.
Multiply length times width if the shape is a rectangle. Other shapes have different formulas.
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
That is the definition of the area of a rectangle. It does not work for any other shape.
Area of rectangle is l x b. Where l is length and b is breath of the rectangle.
the area of a triangle is base times height times one half and rectangle is length times width
in order to find area of rectangle=(len*bred)
base times height = area
Squares are rectangles so the formula for area will stay the same.