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OpenStudy (anonymous):
For surface area of a rectangular prism do i do this? (2x25x21)+(2x25x9)+(2x21x9) which equals 1878mm square.
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OpenStudy (anonymous):
2ab + 2bc + 2ac so ---> 2(25x21) + 2(25x9) + 2(21x9)
OpenStudy (anonymous):
so i'm correct right
OpenStudy (anonymous):
1050 + 450 + 378 = 1878. you are correct
OpenStudy (anonymous):
okay love ya bro
OpenStudy (anonymous):
this is for my assignment maths i do not know why they have assignments for maths but thanks.
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OpenStudy (anonymous):
no problem
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