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Mathematics 30 Online
OpenStudy (anonymous):

Mr. McKenzie built a doorstop out of a block of wood. What is the surface area of the doorstop?

OpenStudy (anonymous):

OpenStudy (anonymous):

get the area of each polygon then add all.

OpenStudy (anonymous):

Uhh

OpenStudy (anonymous):

area of triangle = bh/2 area of rectangle = lw

OpenStudy (anonymous):

Uhh

Directrix (directrix):

13*4 + 2* (1/2) *5*12 + 12+ 5*4 = 144 square cm

OpenStudy (anonymous):

+ 36 = 180

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