faces close face One of the flat surfaces of a solid shape. is made up of congruent close congruent Shapes that are the same shape and size, they are identical. Measured in square units, such as cm² and m². The surface area close surface area (of a 3D shape) The total area of all the faces of a 3D shape. The cross-section is a polygon close polygon A closed 2D shape bounded by straight lines. has a constant cross-section close cross-section The face that results from slicing through a solid shape. The lateral area of the right triangular prism becomes 9 times its original value as "l" and "b" are substituted by "3l" and "3b" in the formula of the lateral area of a right triangular prism as A = 3lb = A = 3×(3l)×(3b) = 9 (3lb) which gives 9 times the original value of the lateral area.A prism close prism A 3D shape with a constant polygon cross-section. What Happens to the Lateral Area of a Right Triangular Prism If the Length and Breadth of One Rectangular Face are Tripled? Step 3: Write the obtained answer with square units.Step 2: Now subtract the areas of the triangles at the top and the bottom from the total surface area.Step 1: Identify the given dimensions for the triangular prism.The steps to determine find the lateral area of a right triangular prism if the total surface area is known are: How to Find the Lateral Area of a Right Triangular Prism If Its Total Surface Area is Known? Step 4: Write the obtained answer with units.
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