RT2
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A rectangular prism is a 3D shape that has a rectangular base. The document provides the formula to calculate the surface area of a rectangular prism as Area = 2(length x width) + 2(width x height) + 2(height x length). It then gives an example of calculating the surface area of a prism with dimensions of length 10cm, width 5cm, and height 4cm, which equals 220cm^2.
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RT2
- 1. Rectangular Prisms What they are:
- 2. What they are: Rectangular prisms are 3 dimensional rectangles as opposed to 2 dimensional These are 2D rectangles: This is a 3D rectangular prism :
- 3. Some examples of rectangular prisms might be: A shoe box: a computer:
- 4. Area of Rectangular Prisms Calculating the surface area of a rectangular prism is really simple: All you have to remember is the formula Area =2(lxw)+2(wxh)+2(hxl) L=length W=width H=height length width height
- 5. Some examples Solving some examples: Lets say a rectangular prism has a length of 10cm, a width of 5cm, and a height of 4cm. You can easily solve the question using the formula: Area=2(10x5)+2(5x4)+2(4x10) Area=2(50)+2(20)+2(40) Area=100+40+80=220cm ²
- 6. Another Example A Rectangular prism has: Length=3,Width=5, Height=4. Now just use the formula Area=2(3x5)+2(5x4)+2(4x3) Area=2(15)+2(20)+2(12) Area=30+40+24=94 ²