![]() Use the area formula to find out the minimum amount of gift wrap you will need. ![]() (Do you know how many books are in the box? □) The box contains 100 books of math jokes, so it is a good-sized rectangular prism. You have been asked to wrap a gift box your mathematics club will give to your math club adviser. How To Find The Surface Area Of A Rectangular Prism If you have trouble remembering that special formula, you can always use the general one for rectangular prisms. Any two measurements will give the area of one face, and the cube has six faces, so the area is 6 a 2. This works because every dimension of a cube - width, height, and length - is the same. We can simplify that by factoring out the 2: We can use common abbreviations for width ( w), length ( l) and height ( h) and recast the formula: You must know the width, length and height of the prism before you can apply this formula:Ī = 2 ( w i d t h × l e n g t h ) + 2 ( l e n g t h × h e i g h t ) + 2 ( h e i g h t × w i d t h ) Surface Area Of A Rectangular Prism Formulaįinding surface area for all rectangular prisms (including cubes) involves both addition and multiplication. When you have a cube, finding the area of one face allows you to find the total surface area of the solid very quickly, since it will be six times the area of one face. The surface area of a rectangular prism is the total area of all six faces. What Is The Surface Area Of A Rectangular Prism? Opposite faces are congruent.Ī special type of rectangular prism is a cube, in which all six faces are congruent. All six faces meet at right angles to one another. Surface Area Of A Rectangular Prism What Is A Rectangular Prism?Ī rectangular prism is a six-faced, three-dimensional solid in which all the faces are rectangles. How To Find The Surface Area Of A Rectangular Prism.Surface Area Of A Rectangular Prism Formula.What Is The Surface Area Of A Rectangular Prism?.Printf("Perimeter of Rectangle : %0.Finding the surface area of all rectangular prisms allows you to also find the surface area of any cube, since a cube is a type of rectangular prism. * Perimeter of Rectangle = 2 X(Length + Width) */ * C Program to find perimeter of a rectangle At last, it prints the perimeter of rectangle on screen using printf function. To find the perimeter of rectangle we add the length and width of rectangle and then multiply it with 2(as per formula given above) and store perimeter in a floating point variable. Printf("Area of Rectangle : %0.4f\n", area) Ĭ Program to find the perimeter of the rectangleīelow program, first takes length and width as input from user using scanf function and stores in 'length' and 'width' variables. * C Program to calculate area of a rectangle At last, it prints the area of rectangle on screen using printf function. To find the area of rectangle we multiple the length and width of rectangle and store area in a floating point variable. Below program, first takes length and width as input from user using scanf function and stores in 'length' and 'width' variables. To calculate area of a rectangle, we need length and width of a rectangle. W is the length of smaller side of rectangleĬ Program to find the area of the rectangle L is the length of longer side of rectangle As opposite sides of a rectangle are equal we can calculate perimeter of rectangle as follows: To find the perimeter of a rectangle, we should add the length of all four sides of rectangle.
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