Geometry

What is the lateral surface area of the prism?

Rectangular prism
Length: 17.2
Width: 3
Height: 5.5

283.8 m^2
292.4 m^2
325.4 m^2
407 m^2

I already found the surface area (325.4 m^2) and I'm using the formula for lateral surface area 2lh + 2wh... but I keep getting 222.2 which is not an option!:( Please tell me what I am doing wrong? Thanks

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  1. 17.2 * 5.5 * 2 = 189.2
    3 * 5.5 * 2 = 33

    I get the same answer. Check with your teacher.

    http://www.nelson.com/school/elementary/mathK8/quebec/0176237879/documents/NM8SB_11A.pdf

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