Download Article Show Download Article A rectangular prism is a name for a 6-sided 3-dimensional figure that is very familiar to everybody—a box.[1] Think of a brick, or a shoebox, and you know exactly what a rectangular prism is. The surface area is the amount of space on the outside of the object. "How much paper do I need to wrap this shoebox" sounds a lot less complicated, but it's exactly the same math problem. Surface Area Help
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Thanks for submitting a tip for review! Advertisement About This ArticleArticle SummaryX 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. Finally, find the area of the front and back faces by multiplying the length and height of the prism. To find the surface area, simply add all 6 of these areas together and write your result in square units. If you want to learn how to simplify your formulas to make them easier to remember, keep reading the article! Did this summary help you? Thanks to all authors for creating a page that has been read 1,121,876 times. Did this article help you?What is the formula for the lateral area of a prism?The lateral surface area of the right triangular prism (LSA) = ah + bh + ch (or) (a + b + c) h, where a, b and c are the bases of the rectangular faces and h is the common height or the total height of the prism. Also, (a + b + c) is the perimeter of the base (triangle).
How do you find the lateral area?For a cylinder, we can also develop formulas from the net.. The dimensions of the lateral surface are the circumference of the circle, 2πr, and the height of the cylinder, h.. In other words,. Lateral Area = Length of Rectangle × Width of Rectangle.. Lateral Area = 2πrh.. |