Step 4: Write the obtained answer with square units.Step 3: Multiply the obtained by 3, as there are three such faces. ![]() Step 2: Now determine the area of a rectangular face by multiplying the length and breadth of the rectangular faces.Step 1: Identify the length and breadth of the rectangular faces.The steps to determine the lateral area of a right triangular prism are: How to Find Lateral Area of a Right Triangular Prism? The formula the lateral area of a right triangular prism shows the direct dependence of the area of a rectangular face on it. The formula of the lateral area of a right triangular prism is given as LA = 3lb, where l is the length of the rectangle and b is the breadth of the rectangle. What is the Formula of the Lateral Area of a Right Triangular Prism? For example, it can be expressed as m 2, cm 2, in 2, etc depending upon the given units. What Units Are Used for Lateral Area of a Right Triangular Prism? The rectangular or lateral faces are perpendicular to the triangular bases. Also, the two triangular bases at the top and the bottom are parallel and congruent to each other. A right triangular prism has three rectangular sides which are congruent. The lateral area of a right triangular prism is defined as the number of unit squares that can be fit into a right triangular prism. All the other versions may be calculated with our triangular prism calculator.FAQs on the Lateral Area of a Right Triangular Prism What is the Lateral Area of a Right Triangular Prism? The only option when you can't calculate triangular prism volume is to have a given triangle base and its height (do you know why? Think about it for a moment). Using law of sines, we can find the two sides of the triangular base:Īrea = (length * (a + a * (sin(angle1) / sin(angle1+angle2)) + a * (sin(angle2) / sin(angle1+angle2)))) + a * ((a * sin(angle1)) / sin(angle1 + angle2)) * sin(angle2) Triangular base: given two angles and a side between them (ASA) Using law of cosines, we can find the third triangle side:Īrea = length * (a + b + √( b² + a² - (2 * b * a * cos(angle)))) + a * b * sin(angle) Triangular base: given two sides and the angle between them (SAS) ![]() However, we don't always have the three sides given.
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