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Mathematics 21 Online
OpenStudy (clobber02):

What is the surface area of this rectangular prism?

OpenStudy (clobber02):

A. 146 in2 B. 292 in2 C. 336 in2 D. 584 in2

OpenStudy (clobber02):

@triciaal

OpenStudy (amorfide):

surface area formula A=2(wl+hl+hw) where w is width, h is height, l is length

OpenStudy (clobber02):

?

OpenStudy (amorfide):

substitute your values into the formula to get A=2( (6x8)+(7x8)+(7x6))

OpenStudy (anonymous):

You need to draw a net (picture of the shape unfolded) and figure out the area of each side. As it is a rectangular prism you will have three groups of 2. top and bottom are the same. Front and back, then the two sides.

OpenStudy (clobber02):

im so confused

OpenStudy (anonymous):

Draw the net as is probably indicated in your text

OpenStudy (anonymous):

The base (bottom) has an area of 8 by 6. These are the same dimesions as the top. Now look at the side. The dimensions are 6 by 7. the opposite sides are the same. The end of the box. is 8 by 6

OpenStudy (anonymous):

now write an equation. 2 (8 *6) +2 (6*7) +2 (8*6)

OpenStudy (anonymous):

sorry it is 8*6 6*7 and 8*7

OpenStudy (clobber02):

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