![]() ![]() Let us solve an example to understand the concept better. So we can calculate the surface area by calculating 3 times the height times the triangle side length for the rectangular faces and adding two times the area of. Total Surface Area ( TSA) = 2( lw + wh + hl), here l = length, w = width, h = height The formula to calculate the TSA of a rectangular prism is given below: The total surface area (TSA) of a rectangular prism is the sum of the lateral surface area and twice the base area. Lateral Surface Area ( LSA) = 2( wh + hl), here, l = length, w = width, h = height Total Surface Area The formula to calculate the total and lateral surface area of a rectangular prism is given below: The lateral surface area (LSA) of a rectangular prism is only the sum of the surface area of all its faces except the bases. We can calculate 2 types of surface areas in a rectangular prism. It is expressed in square units such as m 2, cm 2, mm 2, and in 2. The surface area of a rectangular prism is the entire space occupied by its outermost layer (or faces). The faces of an oblique rectangular prism are parallelograms. ![]() So, every lateral face is parallelogram-shaped. Oblique Rectangular Prism – Its lateral faces are not perpendicular to its bases.The faces of a right rectangular prism are rectangles. Thus, a cuboid also holds all the above features except the oblique rectangular prism. A cuboid is a right rectangular prism as all its angles are right angles. Right Rectangular Prism – It has all the faces perpendicular.Discuss similarities and differences in their properties to reinforce understanding. With students of all ages, draw connections between rectangular prisms and other geometric shapes, such as squares, rectangles, and cubes.For example, ask middle schoolers to calculate the volume or surface area of a rectangular prism or find the dimensions of an object given its properties. Provide students with real-world practice problems or puzzles that involve rectangular prisms.This helps reinforce the concept of dimensions and encourages critical thinking. With upper elementary students, in lue of working with rectangular prisms on worksheets, allow students to measure and compare the length, width, and height of rectangular prisms using rulers or measuring tapes.This hands-on approach helps them visualize and understand the properties and dimensions of rectangular prisms. Provide students with physical rectangular prisms or building blocks to explore and manipulate.These objects have a box-like shape with rectangular sides. Some real-life examples of rectangular prisms are shoeboxes, books, refrigerators, and televisions. ![]()
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