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Mathematics 8 Online
OpenStudy (anonymous):

The area of the base of a prism is 24 mm2. The perimeter of the base is 22 mm. The height of the prism is 5 mm. What is the surface area of the prism? mm2

OpenStudy (anonymous):

by be back n ten

OpenStudy (triciaal):

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OpenStudy (triciaal):

surface area is the sum of the area of all the faces

OpenStudy (triciaal):

2 * base area + Perimeter of base * height

OpenStudy (anonymous):

i'm going to guess that this is a rectangular prism because if it was a cube, it would state cube. the formula for finding surface area of a rectangular prism is 2(w*l + h*l + h*w). we know height (h) is 5 mm. two ends of the prism are usually squares. if we take the perimeter and subtract 10mm (pair of 5 mm sides), you are left with 12 mm.then u divide 12 by 2 which gives u 6

OpenStudy (triciaal):

@israa88 I did this problem recently and found that it didn't matter what the base was (rectangular or trianglular) the important thing was to find the correct base area and perimeter.

OpenStudy (triciaal):

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