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Mathematics 21 Online
OpenStudy (anonymous):

What is the surface area of the figure? fifty-seven square meters seventy-two square meters one hundred twenty square meters one hundred thirty-eight square meters

OpenStudy (anonymous):

OpenStudy (anonymous):

48+24*3=120

OpenStudy (anonymous):

Thank you.

OpenStudy (anonymous):

get 2 triangles' area, 6*8/2*2=48; get the middle area, (6+8+10)*3=72

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