Because the wall is rectangle shaped, we can use the formula for area of a rectangle to find the area of the wall. To find the total cost of painting for the wall, we have to know its area. If the cost of painting is $8.50 per square feet, then find the total cost of painting for the wall. The length and width of a rectangular shaped wall are 8 ft and 12 ft respectively. So, the perimeter of the rectangle is 6 square cm. Therefore, the width of the rectangle is 2 cm. In the figure shown above, consider the right triangle ABC. In the figure shown above, length is given, that is 3 cm. To find the area of a rectangle, we have to know its length and width. The rectangle shape has all the angles equal to 90°.The figure shown above is a rectangle with 3 cm length and the measure of one the diagonals is √13 cm. What is a Rectangle?Ī rectangle is a closed two-dimensional figure with four sides where opposite sides are equal and parallel to each other. The formula to calculate the area of a rectangle is Length × Breadth and that of the square is (side) 2. No, the area of the square is not necessarily the same as the area of the rectangle because every square is a rectangle with length and breadth equal but all rectangles are not square. Is the Area of the Rectangle the Same as the Area of the Square? Alternatively, we can write this formula as (⎷(Diagonal) 2 - (Breadth) 2) × Breadth. Now, the formula to calculate the area of a rectangle is Length × Breadth. We can find the diagonal of a rectangle by using the Pythagoras theorem: (Diagonal) 2 = (Length) 2 + (Breadth) 2. How Can We Find the Area of a Rectangle Using its Diagonal? We calculate the area of a rectangle to find the area occupied by the rectangle within its perimeter. Why Do We Calculate the Area of a Rectangle? The area of the rectangle is 12 square inches. For example, if the dimensions of a rectangle are 4 inches × 3 inches. The unit of area of a rectangle is square units. So, Area of Rectangle = (a × b) square units. The area of a rectangle (A) is the product of its length 'a' and width or breadth 'b'. What is the Formula for the Area of a Rectangle? It is expressed in terms of square units. The area of a rectangle is defined as a product of length and width. Hence, Perimeter of Rectangle = 2 (Length + Width) units. The perimeter of a rectangle is the sum of its four sides. What is the Perimeter and Area of a Rectangle? It is calculated by finding the product of the length and breadth of the rectangle. The area of the space occupied within the perimeter of a rectangle is called the area of a rectangle. Thus, the area of the above rectangle = 12 square inches.įAQs on Area of Rectangle What is the Area of a Rectangle in Geometry? Since the unit of this rectangle is 'inches,' the area is measured and written in square inches. We have already learned that area is measured in square units. How many squares can you observe? There are 12 squares in total. Now, count the number of unit squares in the above figure. Each unit square is a square of length 1 inch. Let us draw unit squares inside the rectangle. The area occupied by a rectangle within its boundary is called the area of the rectangle. For example, let us consider a rectangle of length 4 inches and width 3 inches. You can use the formula of the area of a rectangle to find the space occupied by these objects. Some examples of rectangular shapes are the flat surfaces of laptop monitors, blackboards, painting canvas, etc. It is measured in terms of the 'number of' square units (square centimeters, square inches, square feet, etc.) The area of a rectangle is the number of unit squares that can fit into a rectangle. The area can be defined as the amount of space covered by a flat surface of a particular shape.

Rectangle area formula