Area is 2 dimensional it has a length and a width area is measured in square units such as square inches square feet or square meters to find the area of a rectangle multiply the length by the width the formula is a l w where a is the area l is the length w is the width and means multiply. Example sam cuts grass at 010 per square meter how much does sam earn cutting this area lets break the area into two parts part a is a square. A rectangle is a quadrilateral with two sides of equal length and two sides of equal width that contains four right angles to find the area of a rectangle all you have to do is multiply its length with its width if you want to know how to find the area of a rectangle just follow these easy steps. To find the surface area of a rectangular prism measure the length width and height of the prism find the area of the top and bottom faces by multiplying the length and width of the prism then calculate the area of the left and right faces by multiplying the width and height. For example enter the two side lengths the area perimeter and diagonal lengths will be found try this in the figure above click on hide details drag the orange dots on the vertices to make a random size rectangle now try to estimate the area of the rectangle just looking at the squares inside it
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