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Mathematics
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OpenStudy (narissa):
a few more check please
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OpenStudy (narissa):
OpenStudy (narissa):
@iGreen
OpenStudy (tkhunny):
Why are you showing no work at all from your own head? Show your work!
Cut the object into manageable pieces. You'll be done in a moment.
OpenStudy (narissa):
2*5*12+2*12*7*5
OpenStudy (igreen):
?
I get 960 from that
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OpenStudy (narissa):
=120+168+70=358
OpenStudy (narissa):
now im confused
OpenStudy (narissa):
tell that tkhunny to come back that person does not like me i just want to know if its right
OpenStudy (igreen):
Okay, we can cut it into a rectangular prism and a cube.
Rectangular Prism = 12 * 7 * 5
Cube = 5
Rectangular Prism:
SA=2(wl+hl+hw)
Cube:
SA = 6a^2
OpenStudy (narissa):
im getting really confused now
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OpenStudy (igreen):
Plug in what we know:
\(\sf 2((5)(12) + (7)(12) + (7)(5)) + 6(5)^2\)
OpenStudy (igreen):
Can you simplify that?
OpenStudy (narissa):
1520
OpenStudy (narissa):
huh idk
OpenStudy (igreen):
No, check again.
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OpenStudy (igreen):
5 * 12 = ?
7 * 12 = ?
7 * 5 = ?
OpenStudy (narissa):
60,84,35
OpenStudy (igreen):
Yes, so we have:
\(\sf 2(60 + 84 + 35) + 6(5)^2\)
Now simplify \(\sf 5^2\).
OpenStudy (narissa):
25
OpenStudy (narissa):
is it a
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OpenStudy (igreen):
Yes, so we have:
\(\sf 2(60 + 84 + 35) + 6(25)\)
Add 60 + 84 + 35.
OpenStudy (narissa):
179
OpenStudy (narissa):
358+150=508
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